1. Physical Science EOCT Practice Part I
Milton High School

2. Which of the following conclusions is supported by the illustration?
The diagram shows different types of electromagnetic waves and their relative frequencies and wavelengths.
Which of the following conclusions is supported by the illustration?
There is no relationship between frequency and wavelength.
As wavelength decreases, frequency remains the same.
As wavelength decreases, frequency decreases.
As wavelength decreases, frequency increases.

3. Which of the following conclusions is supported by the illustration?
The diagram shows different types of electromagnetic waves and their relative frequencies and wavelengths.
Which of the following conclusions is supported by the illustration?
There is no relationship between frequency and wavelength.
As wavelength decreases, frequency remains the same.
As wavelength decreases, frequency decreases.
As wavelength decreases, frequency increases.

4. Gabriel looks at a fish tank from the side
Gabriel looks at a fish tank from the side. Gabriel then looks down into the fish tank from above and observes that the position of the plants in the water looks different. Which type of wave behavior causes the apparent change in the position of the plants?
Interference
Absorption
Refraction
Reflection

5. Gabriel looks at a fish tank from the side
Gabriel looks at a fish tank from the side. Gabriel then looks down into the fish tank from above and observes that the position of the plants in the water looks different. Which type of wave behavior causes the apparent change in the position of the plants?
Interference
Absorption
Refraction
Reflection

6. Mr. Lanham is in a space shuttle which is orbiting Earth at a speed of 27,200 miles per hour. A long arm lifts a satellite out of the cargo bay and gently releases the satellite next to the shuttle . According to Newton’s first law of motion, what should be the relative speed of the satellite after five minutes?
The same speed as the shuttle
Slower than the shuttle
Faster than the shuttle
The same as Earth’s rotation

7. Mr. Lanham is in a space shuttle orbitting Earth at a speed of 27,200 miles per hour. A long arm lifts a satellite out of the cargo bay and gently releases the satellite next to the shuttle . According to Newton’s first law of motion, what should be the relative speed of the satellite after five minutes?
The same speed as the shuttle
Slower than the shuttle
Faster than the shuttle
The same as Earth’s rotation

8. When copper reacts with oxygen in the air, a color change takes place, and the metal changes color from reddish brown to green. What type of change occurs to produce this color change?
Dissolving
Conductivity
Physical change
Chemical change

9. When copper reacts with oxygen in the air, a color change takes place, and the metal changes color from reddish brown to green. What type of change occurs to produce this color change?
Dissolving
Conductivity
Physical change
Chemical change

10. The illustration shows the box from the Periodic Table that represents the element beryllium (Be).
Based on the information provided, how many neutrons do most beryllium atoms contain in their nuclei? 2 4 5 9

11. The illustration shows the box from the Periodic Table that represents the element beryllium (Be).
Based on the information provided, how many neutrons do most beryllium atoms contain in their nuclei? 2 4 5 9

12. Scandium is an element that normally has 23 neutrons in its nucleus
Scandium is an element that normally has 23 neutrons in its nucleus. The atomic number of scandium is 21. How many electrons would you expect an atom of scandium to have? 2 21 23 44

13. Scandium is an element that normally has 23 neutrons in its nucleus
Scandium is an element that normally has 23 neutrons in its nucleus. The atomic number of scandium is 21. How many electrons would you expect an atom of scandium to have? 2 21 23 44

14. Which of the following is true for an earthquake wave, but not for an electromagnetic wave?
It requires matter to transfer energy.
It does not require matter to transfer energy.
It can travel only in a vacuum.
It does not transfer energy.

15. Which of the following is true for an earthquake wave, but not for an electromagnetic wave?
It requires matter to transfer energy.
It does not require matter to transfer energy.
It can travel only in a vacuum.
It does not transfer energy.

16. Why do atoms of elements have neutral charges?
All atoms contain neutrons which have no charge.
The number of protons and the number of neutrons are equal.
The number of protons and the number of electrons are equal.
The number of neutrons and the number of electrons are equal.

17. Why do atoms of elements have neutral charges?
All atoms contain neutrons which have no charge.
The number of protons and the number of neutrons are equal.
The number of protons and the number of electrons are equal.
The number of neutrons and the number of electrons are equal.

18. Which of the following properties of atoms can be used to identify an atom?
Its number of valence electrons
Its number of protons
Its number of neutrons
Its combined number of protons and neutrons

19. Which of the following properties of atoms can be used to identify an atom?
Its number of valence electrons
Its number of protons
Its number of neutrons
Its combined number of protons and neutrons

20. The molecules in a sample of matter move independently of one another
The molecules in a sample of matter move independently of one another. The substance takes the shape of its container. When the substance is moved from one container to another, its shape changes, but its volume remains the same. What type of substance is described?
Plasma
Gas
Liquid
Solid

21. The molecules in a sample of matter move independently of one another
The molecules in a sample of matter move independently of one another. The substance takes the shape of its container. When the substance is moved from one container to another, its shape changes, but its volume remains the same. What type of substance is described?
Plasma
Gas
Liquid
Solid

22. Which property of matter is determined by measuring the pull of gravity on a sample of matter?
Weight
Mass
Volume
Acceleration

23. Which property of matter is determined by measuring the pull of gravity on a sample of matter?
Weight
Mass
Volume
Acceleration

24. Which of the following devices transforms electrical energy into mechanical energy?
Light-bulb
Electric motor
Generator
Wind turbine

25. Which of the following devices transforms electrical energy into mechanical energy?
Light-bulb
Electric motor
Generator
Wind turbine

26. In which of the following media would you expect sound waves not to travel?
Solid
Liquid
Gas
Vacuum

27. In which of the following media would you expect sound waves not to travel?
Solid
Liquid
Gas
Vacuum

28. The half-life of iodine-131 is 8 days
The half-life of iodine-131 is 8 days. What fraction of a sample of iodine-131 will remain after 32 days?
One-half
One-fourth
One-eighth
One-sixteenth

29. The half-life of iodine-131 is 8 days
The half-life of iodine-131 is 8 days. What fraction of a sample of iodine-131 will remain after 32 days?
One-half
One-fourth
One-eighth
One-sixteenth

30. Which of the following subatomic particles contributes significantly to the mass of an atom but does not contribute to its electrical charge?
Proton
Quarks
Electron
Neutron

31. Which of the following subatomic particles contributes significantly to the mass of an atom but does not contribute to its electrical charge?
Proton
Quarks
Electron
Neutron

32. Salt dissolves in water forming a solution
Salt dissolves in water forming a solution. What could be done to speed up the rate at which salt dissolves?
Heat the water
Remove the ions
Do not stir the solution
Put in a larger piece of salt

33. Salt dissolves in water forming a solution
Salt dissolves in water forming a solution. What could be done to speed up the rate at which salt dissolves?
Heat the water
Remove the ions
Do not stir the solution
Put in a larger piece of salt

34. Which of the following examples is an example of a physical change?
Burning of methane gas produces water and carbon dioxide
Vinegar and baking soda combining to form a salt and water
Condensation of water vapor on the outside of a cold can of soda
Formation of silver sulfide when silver reacts with sulfur in the air

35. Which of the following examples is an example of a physical change?
Burning of methane gas produces water and carbon dioxide
Vinegar and baking soda combining to form a salt and water
Condensation of water vapor on the outside of a cold can of soda
Formation of silver sulfide when silver reacts with sulfur in the air

36. Which of the following is NOT an example of an electromagnetic wave?
Sound waves
Radio waves
Ultraviolet waves
Gamma rays

37. Which of the following is NOT an example of an electromagnetic wave?
Sound waves
Radio waves
Ultraviolet waves
Gamma rays

38. Mr. Sylvestri is preparing soup for dinner
Mr. Sylvestri is preparing soup for dinner. He uses a large metal pot to cook the soup. The pot has two metal handles. Mr. Sylvestri is about to lift the pot with both of his hands when he remembers to use the pot holders to protect his hands. What is he protecting himself from?
Heat transfer by radiation
Heat transfer by convection
Heat transfer by conduction
Heat transfer by evaporation

39. Mr. Sylvestri is preparing soup for dinner
Mr. Sylvestri is preparing soup for dinner. He uses a large metal pot to cook the soup. The pot has two metal handles. Mr. Sylvestri is about to lift the pot with both of his hands when he remembers to use the pot holders to protect his hands. What is he protecting himself from?
Heat transfer by radiation
Heat transfer by convection
Heat transfer by conduction
Heat transfer by evaporation

40. What interaction will occur when two out of phase light waves meet and merge into a single light wave?
Refraction
Reflection
Constructive interference
Destructive interference

41. What interaction will occur when two out of phase light waves meet and merge into a single light wave?
Refraction
Reflection
Constructive interference
Destructive interference

42. An electromagnet becomes stronger when
Its iron core is made thicker
The number of coils of wire around its core are increased
An aluminum nail is used instead of an iron nail
A higher resistance wire material is used

43. An electromagnet becomes stronger when
Its iron core is made thicker
The number of coils of wire around its core are increased
An aluminum nail is used instead of an iron nail
A higher resistance wire material is used

44. Buffy studied the flow of water through different types of soil
Buffy studied the flow of water through different types of soil. She set up identical volumes of different types of soil in each of five different beakers. One by one, she poured 500mL of water into the samples and measured the time for the water to drain through the samples. In this investigation, what is the dependent variable?
The number of samples she used
The amount of water she poured
The type of soil selected
The drainage time

45. Buffy studied the flow of water through different types of soil
Buffy studied the flow of water through different types of soil. She set up identical volumes of different types of soil in each of five different beakers. One by one, she poured 500mL of water into the samples and measured the time for the water to drain through the samples. In this investigation, what is the dependent variable?
The number of samples she used
The amount of water she poured
The type of soil selected
The drainage time

46. Brad investigated whether sea salt raises the boiling point of water
Brad investigated whether sea salt raises the boiling point of water. He put 3 liters of water at 20oC and 1.5 cups of sea salt in a pot, heated the solution over flame, and measured the temperature when the water reached a rolling boil. He repeated the experiment three times and recorded the same result each time. He concluded the sea salt raises the boiling point of water by 5oC. Where did Brad err in his experiment?
He did not boil a pot of water without sea salt
He did not conduct the trials at the same time
He waited until the water reached a rolling boil
He should have repeated the measurement several more times

47. Brad investigated whether sea salt raises the boiling point of water
Brad investigated whether sea salt raises the boiling point of water. He put 3 liters of water at 20oC and 1.5 cups of sea salt in a pot, heated the solution over flame, and measured the temperature when the water reached a rolling boil. He repeated the experiment three times and recorded the same result each time. He concluded the sea salt raises the boiling point of water by 5oC. Where did Brad err in his experiment?
He did not boil a pot of water without sea salt
He did not conduct the trials at the same time
He waited until the water reached a rolling boil
He should have repeated the measurement several more times

48. The density of aluminum is 2. 70 g/cm3
The density of aluminum is 2.70 g/cm3. A piece of aluminum foil has a volume of 54.0 cm3. What is the mass of this piece of aluminum foil?
146 g
20.0 g
14.6 g
0.050 g

49. The density of aluminum is 2. 70 g/cm3
The density of aluminum is 2.70 g/cm3. A piece of aluminum foil has a volume of 54.0 cm3. What is the mass of this piece of aluminum foil?
146 g
20.0 g
14.6 g
0.050 g

50. Which of the following is the correct chemical formula for the covalent compound carbon tetrachloride?
CCl
C4Cl
CCl4
C4Cl4

51. Which of the following is the correct chemical formula for the covalent compound carbon tetrachloride?
CCl
C4Cl
CCl4
C4Cl4

52. What does the name copper(II) oxide tell you about the copper ions in the compound?
Each copper ion in the compound has a +2 charge
There is only one type of stable positive copper ion
There are two copper ions for ever O2- ion in the compound
The formula for the compound has a subscript after the symbol for copper

53. What does the name copper(II) oxide tell you about the copper ions in the compound?
Each copper ion in the compound has a +2 charge
There is only one type of stable positive copper ion
There are two copper ions for ever O2- ion in the compound
The formula for the compound has a subscript after the symbol for copper

54. Which of the following is the correct chemical formula for an ionic compound consisting of Ca2+ ions and I- ions?
CaI
Ca2I
CaI2
CaI3

55. Which of the following is the correct chemical formula for an ionic compound consisting of Ca2+ ions and I- ions?
CaI
Ca2I
CaI2
CaI3

56. What is the oxidation number for nitrogen in the binary ionic compound potassium nitride (K3N)?1- 2- 3-

57. What is the oxidation number for nitrogen in the binary ionic compound potassium nitride (K3N)?1- 2- 3-

58. What is the coefficient on Al2O3 when the equation describing the following synthesis reaction is balanced?
Al + O Al2O3 1 2 3 6

59. What is the coefficient on Al2O3 when the equation describing the following synthesis reaction is balanced?
Al + O Al2O3 1 2 3 6

60. During nuclear fission, how does the mass of the reactants compare to the mass of the products?
The mass of the reactants is equal to the mass of the products.
The mass of the reactants is less than the mass of the products.
The mass of the reactants is greater than the mass of the products.
The mass of the reactants can be greater than or less than the mass of the products.

61. During nuclear fission, how does the mass of the reactants compare to the mass of the products?
The mass of the reactants is equal to the mass of the products.
The mass of the reactants is less than the mass of the products.
The mass of the reactants is greater than the mass of the products.
The mass of the reactants can be greater than or less than the mass of the products.

62. Physical Science EOCT Practice Part II
Milton High School

63. Potassium is an element in group 1 and period 4
Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain? 1 2 3 4

64. Potassium is an element in group 1 and period 4
Potassium is an element in group 1 and period 4. How many valence electrons does an atom of potassium contain? 1 2 3 4

65. What phase change occurs when a solid changes directly into a gas?
Freezing
Melting
Evaporation
Sublimation

66. What phase change occurs when a solid changes directly into a gas?
Freezing
Melting
Evaporation
Sublimation

67. What type of arrangement and motion do particles in a liquid have?
Particles in liquid are closely packed together and vibrating.
Particles in liquid are not in contact with each other and are moving very quickly.
Particles in liquid are in contact with each other, but they are able to slip past one another.
Particles in liquid are not in contact with one another and are moving at extreme speeds.

68. What type of arrangement and motion do particles in a liquid have?
Particles in liquid are closely packed together and vibrating.
Particles in liquid are not in contact with each other and are moving very quickly.
Particles in liquid are in contact with each other, but they are able to slip past one another.
Particles in liquid are not in contact with one another and are moving at extreme speeds.

69. Which of the following is NOT a drawback of nuclear power plants?
The cooling of the nuclear core results in thermal pollution
Nuclear power plants are safe and do not have the potential to leak radioactive material
Nuclear waste from nuclear power plants must be stored safely and for thousands of years
I only
II only
I and III only
I, II, and III

70. Which of the following is NOT a drawback of nuclear power plants?
The cooling of the nuclear core results in thermal pollution
Nuclear power plants are safe and do not have the potential to leak radioactive material
Nuclear waste from nuclear power plants must be stored safely and for thousands of years
I only
II only
I and III only
I, II, and III

71. During the process of melting, what happens to the temperature of the substance?
It stays constant
It increases
It decreases
It increases and then decreases

72. During the process of melting, what happens to the temperature of the substance?
It stays constant
It increases
It decreases
It increases and then decreases

73. Ms. Schaefer filled a balloon to its maximum capacity inside her air conditioned home. She then walked outside with the balloon and set it out on her deck where the balloon was exposed to the Sun’s radiant summer heat. According to Charle’s Law, what could happen to her balloon?
It could pop because the increase in temperature would cause an increase in volume.
It could pop because the increase in temperature will cause a decrease in pressure.
It could get smaller because the increase in temperature would cause a decrease in pressure.
It could get smaller because the increase in temperature would cause a decrease in volume.

74. Ms. Schaefer filled a balloon to its maximum capacity inside her air conditioned home. She then walked outside with the balloon and set it out on her deck where the balloon was exposed to the Sun’s radiant summer heat. According to Charle’s Law, what could happen to her balloon?
It could pop because the increase in temperature would cause an increase in volume.
It could pop because the increase in temperature will cause a decrease in pressure.
It could get smaller because the increase in temperature would cause a decrease in pressure.
It could get smaller because the increase in temperature would cause a decrease in volume.

75. Ms. Coln dissolves an unknown substance in water
Ms. Coln dissolves an unknown substance in water. The solution is corrosive, conducts electricity, and has a higher concentration of H+ ions than OH- ions. What kind of solution does this unknown substance form?
An acidic solution
A basic solution
A neutral solution
A non-electrolyte solution

76. Ms. Coln dissolves an unknown substance in water
Ms. Coln dissolves an unknown substance in water. The solution is corrosive, conducts electricity, and has a higher concentration of H+ ions than OH- ions. What kind of solution does this unknown substance form?
An acidic solution
A basic solution
A neutral solution
A non-electrolyte solution

77. What happens to the solubility of a typical solute as temperature increases?
The solubility decreases
The solubility increases
The solubility remains the same
There is no way to know without knowing which exact solute

78. What happens to the solubility of a typical solute as temperature increases?
The solubility decreases
The solubility increases
The solubility remains the same
There is no way to know without knowing which exact solute

79. What is the coefficient on Hg when the following equation is balanced?
HgO Hg O2 1 2 3 4

80. What is the coefficient on Hg when the following equation is balanced?
HgO Hg O2 1 2 3 4

81. What type of nuclear reaction results in a single nucleus undergoing an increase in atomic number, no change in mass number, and the release of an electron?
Alpha decay
Beta decay
Gamma radiation
Nuclear fusion

82. What type of nuclear reaction results in a single nucleus undergoing an increase in atomic number, no change in mass number, and the release of an electron?
Alpha decay
Beta decay
Gamma radiation
Nuclear fusion

83. Which of the following BEST describes the difference between speed and velocity?
Speed includes distance and direction while velocity includes only distance.
Speed includes distance and direction while velocity includes only direction.
Velocity includes distance and direction while speed includes only direction.
Velocity includes distance and direction while speed only distance.

84. Which of the following BEST describes the difference between speed and velocity?
Speed includes distance and direction while velocity includes only distance.
Speed includes distance and direction while velocity includes only direction.
Velocity includes distance and direction while speed includes only direction.
Velocity includes distance and direction while speed only distance.

85. Mr. Lanham takes off in his boat from the dock and reaches a velocity of 6 meters per second after 3 seconds. What is the boat’s acceleration?
0.5 meters/second2
2 meters/second2
6 meters/second2
18 meters/second2

86. Mr. Lanham takes off in his boat from the dock and reaches a velocity of 6 meters per second after 3 seconds. What is the boat’s acceleration?
0.5 meters/second2
2 meters/second2
6 meters/second2
18 meters/second2

87. Inertia is the tendency of an object to continue its current state of motion. Which of the following BEST describes the relationship between inertia and mass?
A greater mass means that something is easier to slow down or speed up.
The amount of inertia of an object is equal to its mass.
The greater the mass of an object, the greater the inertia it has.
The greater the mass of an object , the less inertia it has.

88. Inertia is the tendency of an object to continue its current state of motion. Which of the following BEST describes the relationship between inertia and mass?
A greater mass means that something is easier to slow down or speed up.
The amount of inertia of an object is equal to its mass.
The greater the mass of an object, the greater the inertia it has.
The greater the mass of an object , the less inertia it has.

89. When Mrs. Pullano is standing at the front of the class teaching Chemistry, the force of gravity is pulling her down toward the ground. The ground is pushing back with an equal and opposite force. This is an example of
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
The Law of Gravitation

90. When Mrs. Pullano is standing at the front of the class teaching Chemistry, the force of gravity is pulling her down toward the ground. The ground is pushing back with an equal and opposite force. This is an example of
Newton’s First Law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
The Law of Gravitation

91. Joel drops a baseball from a window on the tenth floor of his apartment building. Each floor has a height of 12 feet. What is the baseball’s velocity after 2 seconds?
2.0 m/sec
9.8 m/sec
19.6 m/sec
24 m/sec J

92. Joel drops a hammer from a window on the tenth floor of his apartment building. Each floor has a height of 12 feet. What is the hammer’s velocity after 2 seconds?
2.0 m/sec
9.8 m/sec
19.6 m/sec
24 m/sec J

93. The mass of two objects is an important factor in determining the force of gravity between them. What is the second important factor?
Their volume
The distance between them
Their diameters
Their densities

94. The mass of two objects is an important factor in determining the force of gravity between them. What is the second important factor?
Their volume
The distance between them
Their diameters
Their densities

95. Which statement is correct?
Weight is the amount of material in an object.
Mass is the physical dimensions of an object.
Weight is the gravitational pull on an object.
Mass is the gravitational pull on an object.

96. Which statement is correct?
Weight is the amount of material in an object.
Mass is the physical dimensions of an object.
Weight is the gravitational pull on an object.
Mass is the gravitational pull on an object.

97. Mr. Sheridan entered his prize pumpkin in the State Fair
Mr. Sheridan entered his prize pumpkin in the State Fair. If the mass of the pumpkin is 1400 kg, what is its approximate weight?
14 g
1400 N
14000 N
6360 N

98. Mr. Sheridan entered his prize pumpkin in the State Fair
Mr. Sheridan entered his prize pumpkin in the State Fair. If the mass of the pumpkin is 1400 kg, what is its approximate weight?
14 g
1400 N
14000 N
6360 N

99. It takes 8 seconds for a pulley system to lift a load that weighs 400 N to a height of 10 m. How much power is required?
4000 watts
3200 watts
500 watts
80 watts

100. It takes 8 seconds for a pulley system to lift a load that weighs 400 N to a height of 10 m. How much power is required?
4000 watts
3200 watts
500 watts
80 watts

101. In order for a lever to multiply its effort force,
Its effort force must equal its resistance arm
Its resistance arm must be longer than its effort arm
Its resistance arm should be one meter in length
Its effort arm should be longer than its resistance arm

102. In order for a lever to multiply its effort force,
Its effort force must equal its resistance arm
Its resistance arm must be longer than its effort arm
Its resistance arm should be one meter in length
Its effort arm should be longer than its resistance arm

103. What is the definition of power?
The ability to do work
The rate of doing work
The amount of work done
Work output provided by work input

104. What is the definition of power?
The ability to do work
The rate of doing work
The amount of work done
Work output provided by work input

105. Newton’s first law of motion describes the tendency of objects in motion to continue in motion and objects at rest to remain at rest. What term is used to describe this behavior?
Velocity
Acceleration
Displacement
Inertia

106. Newton’s first law of motion describes the tendency of objects in motion to continue in motion and objects at rest to remain at rest. What term is used to describe this behavior?
Velocity
Acceleration
Displacement
Inertia

107. An acorn falls from an oak tree to the ground and hits a squirrel on the head. What is the acorn’s final velocity if it falls for 3 seconds?
9.8 m/sec
19.6 m/sec
29.4 m/sec
96.0 m/sec

108. An acorn falls from an oak tree to the ground and hits a squirrel on the head. What is the acorn’s final velocity if it falls for 3 seconds?
9.8 m/sec
19.6 m/sec
29.4 m/sec
96.0 m/sec

109. Materials that prevent heat flow are
Usually metals
Conductors
Insulators
Radiators

110. Materials that prevent heat flow are
Usually metals
Conductors
Insulators
Radiators

111. What kind of wave does NOT require a medium for its propagation?
A mechanical transverse wave
An electromagnetic wave
An electromagnetic transverse wave
A mechanical longitudinal wave

112. What kind of wave does NOT require a medium for its propagation?
A mechanical transverse wave
An electromagnetic wave
An electromagnetic transverse wave
A mechanical longitudinal wave

113. In which medium would a sound wave travel the fastest?
Air
Vacuum
Water
Steel

114. In which medium would a sound wave travel the fastest?
Air
Vacuum
Water
Steel

115. A balloon is rubbed all over with wool
A balloon is rubbed all over with wool. The balloon will now attract the water because
The balloon and the water are magnets
The balloon and the water have opposite charges
The balloon and the water have like charges
The balloon and the water are neutral

116. A balloon is rubbed all over with wool
A balloon is rubbed all over with wool. The balloon will now attract the water because
The balloon and the water are magnets
The balloon and the water have opposite charges
The balloon and the water have like charges
The balloon and the water are neutral

117. If a simple circuit has one resistor of 3 ohms and a current of 3 amps, how many volts is the power source?
3 volts
6 volts
9 volts
19 volts

118. If a simple circuit has one resistor of 3 ohms and a current of 3 amps, how many volts is the power source?
3 volts
6 volts
9 volts
19 volts

119. Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1
Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1.5 amps. What is the resistance of the heating element?
40 ohms
60 ohms
90 ohms
120 ohms

120. Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1
Mrs. Davis’ toaster has a voltage of 60 volts and a current of 1.5 amps. What is the resistance of the heating element?
40 ohms
60 ohms
90 ohms
120 ohms

121. Which of the following is NOT an example of alternating current?
Dry cell battery in a flashlight
Television set
Current the power company sends to your school
I only
II only
III only
I and II only

122. Which of the following is NOT an example of alternating current?
Dry cell battery in a flashlight
Television set
Current the power company sends to your school
I only
II only
III only
I and II only

123. Sally is making a solution of kool-aid by dissolving a package of cherry powdered kool-aid mix in a pitcher of water. What is the solvent in this solution?
Cherry flavored kool-aid powder mix
The water
Cherries
The spoon used to stir the solution

124. Sally is making a solution of kool-aid by dissolving a package of cherry powdered kool-aid mix in a pitcher of water. What is the solvent in this solution?
Cherry flavored kool-aid powder mix
The water
Cherries
The spoon used to stir the solution

125. During a water quality lab Sam tested a sample of water for nitrates by dissolving a testing powder in the water along with the required drops of sulfuric acid. Sam capped the test tube and vigorously mixed the solutions together by shaking. What is the solvent in this solution?
Sulfuric acid
The testing powder
The shaking of the test tube
The water sample

126. During a water quality lab Sam tested a sample of water for nitrates by dissolving a testing powder in the water along with the required drops of sulfuric acid. Sam capped the test tube and vigorously mixed the solutions together by shaking. What is the solvent in this solution?
Sulfuric acid
The testing powder
The shaking of the test tube
The water sample

127. Mandy wants to determine the density of a metallic object which is 40 g. She fills a graduated cylinder with water to the 50 mL mark and then gently places the metallic object in the graduated cylinder she just filled. The volume of water in the graduated cylinder with the metallic object moved from the 50 mL mark to the 75 mL mark. What is the density of the metallic object?
0.53 g/mL
0.8 g/mL
1.6 g/mL
25 g/mL

128. Mandy wants to determine the density of a metallic object which is 40 g. She fills a graduated cylinder with water to the 50 mL mark and then gently places the metallic object in the graduated cylinder she just filled. The volume of water in the graduated cylinder with the metallic object moved from the 50 mL mark to the 75 mL mark. What is the density of the metallic object?
0.53 g/mL
0.8 g/mL
1.6 g/mL
25 g/mL

129. When electricity is passed through water, the following decomposition reaction can occur:
2H2O H2 + O2
What does the law of conservation of matter tell you about the ratios of particles in the chemical reaction?
The reacting substances must be the same as the substances produced.
The number of reactant molecules must equal the number of product molecules.
The number of reactant compounds must equal the number of product compounds.
The number of atoms of each element must be equal on both sides of the reaction arrow.

130. When electricity is passed through water, the following decomposition reaction can occur:
2H2O H2 + O2
What does the law of conservation of matter tell you about the ratios of particles in the chemical reaction?
The reacting substances must be the same as the substances produced.
The number of reactant molecules must equal the number of product molecules.
The number of reactant compounds must equal the number of product compounds.
The number of atoms of each element must be equal on both sides of the reaction arrow.

131. The number of energy levels increases.
What happens to the number of energy levels as you travel from the top to bottom in a group on the periodic table?
The number of energy levels increases.
The number of energy levels decreases.
The number of energy levels stays the same.
The number of energy levels is random as you go down a group.
131

132. The number of energy levels increases.
What happens to the number of energy levels as you travel from the top to bottom in a group on the periodic table?
The number of energy levels increases.
The number of energy levels decreases.
The number of energy levels stays the same.
The number of energy levels is random as you go down a group.
132

133. Although light is visible from stars, we cannot hear the sound created when a star explodes. Light is a transverse wave and sound waves are longitudinal waves. Which statement is correct about light and sound waves?
Light waves are transverse waves and they cannot move through the vacuum of space.
Sound waves are longitudinal waves and they cannot move through the vacuum of space.
Light waves and sound waves have identical properties, regardless of whether they are longitudinal or transverse waves.
Sound and light travel through the vacuum of space, but sound waves are never able to reach Earth.

134. Although light is visible from stars, we cannot hear the sound created when a star explodes. Light is a transverse wave and sound waves are longitudinal waves. Which statement is correct about light and sound waves?
Light waves are transverse waves and they cannot move through the vacuum of space.
Sound waves are longitudinal waves and they cannot move through the vacuum of space.
Light waves and sound waves have identical properties, regardless of whether they are longitudinal or transverse waves.
Sound and light travel through the vacuum of space, but sound waves are never able to reach Earth.

135. What happens when you remove one of the light bulbs in a parallel circuit?
Only that light bulb will go dark.
All of the light bulbs will go dark.
The current in the circuit will increase.
The resistance in the circuit will increase.

136. What happens when you remove one of the light bulbs in a parallel circuit?
Only that light bulb will go dark.
All of the light bulbs will go dark.
The current in the circuit will increase.
The resistance in the circuit will increase.

137. When nitrogen gas (N2) and hydrogen gas (H2) are combined at a high temperature and under pressure, they turn into ammonia (NH3). Which is a balanced equation for this reaction?
N H (NH3)
N H (NH3)
N H (NH3)
2N H (NH3)

138. When nitrogen gas (N2) and hydrogen gas (H2) are combined at a high temperature and under pressure, they turn into ammonia (NH3). Which is a balanced equation for this reaction?
N H (NH3)
N H (NH3)
N H (NH3)
2N H (NH3)

139. A radioactive substance has a half-life of 40 years
A radioactive substance has a half-life of 40 years. What fraction of the sample will remain at the end of 160 years?
1/2
1/4
1/8
1/16

140. A radioactive substance has a half-life of 40 years
A radioactive substance has a half-life of 40 years. What fraction of the sample will remain at the end of 160 years?
1/2
1/4
1/8
1/16

141. Look at the reaction below.
Neutron + U Kr Ba neutrons + ENERGY
How do you know this reaction is a nuclear fission reaction?
Energy is released
One large nucleus is split into two smaller nuclei
There are more neutrons in the products than in the reactants
The mass of the reactants is greater than the mass of the products.

142. Look at the reaction below.
Neutron + U Kr Ba neutrons + ENERGY
How do you know this reaction is a nuclear fission reaction?
Energy is released
One large nucleus is split into two smaller nuclei
There are more neutrons in the products than in the reactants
The mass of the reactants is greater than the mass of the products.

143. What type of reaction results in a single nucleus undergoing a decrease in mass number, a decrease in atomic number, and the release of a helium nucleus?
Alpha decay
Beta decay
Gamma radiation
Nuclear fission

144. What type of reaction results in a single nucleus undergoing a decrease in mass number, a decrease in atomic number, and the release of a helium nucleus?
Alpha decay
Beta decay
Gamma radiation
Nuclear fission

145. Which of the electromagnetic waves has a frequency higher than visible light?
Radio
Microwave
Ultraviolet
I only
II only
III only
I and II only

146. Which of the electromagnetic waves has a frequency higher than visible light?
Radio
Microwave
Ultraviolet
I only
II only
III only
I and II only