1. Carbon has an atomic number of 6. How many neutrons does C-14 have?8 14 20

2. Which layer is the least dense?
Dark blue
Clear
Green
Pale blue

3. When dry ice (solid CO2) sublimates into gas, this is an example of?
Physical property
Physical change
Chemical property
Chemical change

4. What state of matter has: indefinite shape, definite volume and loosely arranged particles that have motion?
solid
liquid
gas
plasma

5. Ne is a noble gas and is found in group 18
Ne is a noble gas and is found in group 18. How many valence electrons does it have? 2 8 9 18

6. Atoms with different numbers of electrons than protons are called?
isotopes
ions
neutral
radioactive

7. Atoms of the same element with different numbers of neutrons are called?
isotopes
ions
neutral
radioactive

8. How many atoms are in 2C6H12O624 48

9. Carbon has an atomic number of 6. How many protons does C-14 have?8 14 20

10. Milk is an example of a(n)
solution
suspension
colloid
compound

11. The center of an atom is The electron cloud The protons The neutrons
The nucleus

12. Bases do all of the following EXCEPT
Turn red litmus blue
Taste sour
Have a pH greater than 7
Are slippery

13. Which temperature is lower?
0 F
0 K
-273 F

14. Which depends on the number of particles present?
Temperature
Thermal energy
Chemical properties
Kinetic energy

15. ½ mv2 is the formula for? Potential energy Thermal energy
Kinetic energy
Mechanical energy

16. A skier has the most potential energy?
At the top of the hill
In the middle of the hill
At the bottom of the hill
It depends on the weather

17. What does friction do in terms of energy?
Friction converts potential energy to thermal energy
Friction converts kinetic energy to thermal energy
Friction converts thermal energy into potential energy
Friction destroys energy and creates mass

18. Magnetic fields are created by an atom’s
nucleus
protons
neutrons
electrons

19. The charges on the parts of an atom are
Protons +, neutrons -, electrons no charge
Protons no charge, neutrons -, electrons +
Protons +, neutrons no charge, electrons –
Protons -, neutrons +, electrons no charge

20. The smaller the resistance the
Smaller the voltage
Larger the voltage
Smaller the current
Larger the current

21. How much energy does a 100 W light bulb use in 4 hours
400 Wh
25 Wh

22. If one bulb goes out and the rest stay on the circuit is
Series
Parallel
Complex
Broken

23. If the current only has ONE path to travel through, what type of circuit is it?
Series
Parallel
Complex
Broken

24. By moving a coil of wire past a magnet you can create?
Magnetic Field
Electric current
Electomagnets
Solenoids

25. The distance from crest to crest is called the __ of a wave.
Height
Amplitude
Frequency
Wavelength