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Unit 4 Review DePersio’s Discovery Lab. A solution is formed when one substance is dissolved in another. Mae has a solution in which water is the solvent.

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Presentation on theme: "Unit 4 Review DePersio’s Discovery Lab. A solution is formed when one substance is dissolved in another. Mae has a solution in which water is the solvent."— Presentation transcript:

1 Unit 4 Review DePersio’s Discovery Lab

2 A solution is formed when one substance is dissolved in another. Mae has a solution in which water is the solvent. Which of these could be the solute? D Sugar A Oil B Pebbles C Sand D Sugar Unit 4 Review

3 Jose has 5g of salt and 10mL of water. He pours the water into a beaker and then adds the salt and watches it dissolve. Which word best describes the water? A Mixture B Solute C Solution D Solvent B Solute Unit 4 Review

4 Emily made flow charts to show the changes in states of water. In each, she listed the original state, the process that results in a change in state, and the resulting state. Which of these correctly describes a change in state of water? B Liquid water ® boils ® water vapor A Liquid water ® melts ® solid water B Liquid water ® boils ® water vapor C Solid water ® condenses ® liquid water D Water vapor ® evaporates ® liquid water Unit 4 Review

5 There are three main states of matter: liquid, solid, and gas. Which statement describes the shape of a solid? A It has its own shape. B It does not have shape. C It takes the shape of its container. D It changes shape with temperature. Unit 4 Review

6 There are different characteristics for each of the states of matter. Which statement describes a difference between liquids and solids? C The particles in a solid are much closer together than the particles in a liquid A Temperature can change a solid to a liquid, but it cannot change a liquid to a solid B Solids have a definite volume and liquids do not have a definite volume C The particles in a solid are much closer together than the particles in a liquid D Solids take on the shape of their containers and liquids maintain their own shapes Unit 4 Review

7 Jakob studied drawings of the particles in the same substance. The drawings show the substance in different states and temperatures. Which drawing most likely shows the substance at the highest temperature? Unit 4 Review A BCA BC A

8 Soryana’s teacher gave her a test tube of liquid. Which tool should Soryana use to measure the volume of the liquid? A Balance B Graduated Cylinder C Test Tube D None of the above C Test Tube Unit 4 Review

9 Water can be a liquid, solid, or gas. The pictures show how it changes from each state of matter. What process takes place when matter changes from state 1 to state 3? A Boiling B Condensing C Freezing D Melting Unit 4 Review B Condensing

10 A Divide the volume by the mass B Divide the mass by the volume C Multiply the volume by the mass D Add the mass and volume and divide by 2 Soryana’s teacher gave her a test tube of liquid. Which tool should Soryana use to measure the volume of the liquid? B Divide the mass by the volume Unit 4 Review

11 A Divide the volume by the mass B Divide the mass by the volume C Multiply the volume by the mass D Add the mass and volume and divide by 2 The table gives the mass and volume of four unknown solids. Which is the correct explanation of how to find the density? B Divide the mass by the volume Unit 4 Review SampleMass (g)Volume (mL)Density 11253 23249 32342 45408

12 A Change in mass B Change in C Change in volume D Change in temperature Matter may be a gas, solid, or liquid. It can change from one state to another. Which change most often causes matter to change state? D Change in temperature Unit 4 Review

13 A Solids flow from one place to another. B Gases can expand and be compressed. C Liquids have definite volume and shape. D The particles in solids have weak forces of attraction. Each of the states of matter has specific characteristics. Which statement correctly describes one of these characteristics? B Gases can expand and be compressed. Unit 4 Review

14 A The substance boils at 85 °C. B The substance freezes at 25 °C. C The substance condenses at –10 °C. D The substance changes state at –10 °C. Randall experimented with an unknown liquid. The table shows what happened when he changed the temperature of the liquid. Which statement is supported by Randall’s experiments? A The substance boils at 85 °C. Unit 4 Review Action takenChange in substance Left at room temperature (25 °C)No change, substance remained a liquid Placed in freezer set to –10 °CNo change, substance remained a liquid Heated to 85 °CSubstance became a gas

15 A When matter changes state, new matter may be created. B When matter changes state, it is still the same type of matter. C When matter changes state, its boiling point might also change. D When matter changes state, the space between particles in the matter stays the same. Riley and Jill are studying what happens to matter when it changes state. They found this list of statements. Which of these statements is true? B When matter changes state, it is still the same type of matter. Unit 4 Review

16 A Balance B Graduated cylinder C Temperature D Thermometer Lina needs to make a list of the physical properties of matter. Which of these should Lina include in her list? C Temperature Unit 4 Review

17 A It has definite shape. B It can be compressed. C It has definite texture. D Its particles vibrate in place. Each state of matter has certain physical properties. Which is a physical property of a gas? C It has definite texture. Unit 4 Review

18 A The water froze. B The water melted. C The water condensed. D The water evaporated. During an experiment, Carlos heated a beaker of water over a hot plate burner. After a period of time, the beaker was empty. Which statement describes what happened? D The water evaporated Unit 4 Review

19 A Color B Luster C Texture D Volume Helen is studying the properties of solids. She is comparing the wooden cube and the steel cube shown in the picture below. Which property is the same for the two cubes? D Volume Unit 4 Review

20 A Below 0 °C B Above 100 °C C Between 0 °C and 100 °C D Between 0 °C and 120 °C At what temperatures is water a gas? B Above 100 °C Unit 4 Review

21 The table shows the melting points and boiling points for different substances. Suppose these substances were placed in a freezer set to –50 °C. Which substance would become a liquid? A Chlorine B Mercury C Oxygen D Tungsten B Mercury Unit 4 Review

22 A Ringing a bell B Making ice cubes C Picking up rocks D Making pancakes Wilson made a list of activities that involve a chemical change. Which of these changes should be included on his list? B Making ice cubes Unit 4 Review

23 A Sharpening a pencil B Baking a loaf of bread C Pouring milk into a glass D Crumpling aluminum foil into a ball Jo made a table of chemical changes and physical changes. Which is in the wrong column? D Crumpling aluminum foil into a ball Unit 4 Review

24 ABCDABCD Which of the following represents a physical change? Unit 4 Review C

25 A To write the same report B To practice the experiment C To come to the same conclusion D To be sure the observations are accurate Ava performed an investigation. Then, Matthew repeated the same investigation. What is the best reason for Matthew to repeat it? D To be sure the observations are accurate Unit 4 Review

26 A The mass of each balloon and what was in it B The temperature where each balloon was placed C The size of the table where each balloon was placed D The total mass of all the balloons and what was in them Taylor put the same amounts of water, sugar, and yeast into three balloons. Then she put each one in a place with a different temperature and observed the changes. If someone wanted to replicate Taylor’s experiment, what other information would they need? B The temperature where each balloon was placed Unit 4 Review

27 A They are all liquids B They all include water C The parts of all solutions are evenly mixed D The substances are always permanently combined Andrea created a solution by adding food coloring to water. Her solution is also a mixture. Which of these is true of all solutions? C The parts of all solutions are evenly mixed Unit 4 Review

28 A Combination B Element C Mixture D Solution Heidi combined lettuce, tomatoes, cucumbers, and shredded cheese to make a salad. Which best describes what Heidi made? C Mixture Unit 4 Review

29 A By size B By shape C By magnetism D By evaporation A company collects cans for recycling. Some cans are made of aluminum, and others are made of steel. Which of the following is the best way to separate the mixture of the two types of cans? C By magnetism Unit 4 Review

30 A Shaking the can vigorously B Stirring the solution slowly C Tilting the can carefully from side to side D Setting the can down and leaving it alone Destiny is making a nutrient solution to use in her garden. She places the powder in a watering can. Then she adds the water. Which would dissolve the powder fastest? A Shaking the can vigorously Unit 4 Review

31 A Electron B Neutron C Nucleus D Proton Atoms are made up of smaller particles called subatomic particles. Which is a subatomic particle that has no charge? B Neutron Unit 4 Review

32 A Physical change B Chemical change C Scientific change D Geological change Jacob put yeast into a bowl of water and added a little sugar. He put the bowl in a warm place. After a while, Jacob observed foam spilling out of the bowl. What kind of change is occurring? B Chemical change Unit 4 Review

33 A Color B Light C Share D Temperature Which of these conditions has the greatest effect on how quickly a substance changes from one state to another? D Temperature Unit 4 Review

34 A Milk tastes better when it is cold B The reactions that cause milk to spoil are slower at lower temperatures C Physical changes that cause milk to spoil are slower at lower temperatures D No chemical or physical changes can occur at cool temperatures Why does milk have to be kept in a refrigerator? B The reactions that cause milk to spoil are slower at lower temperatures Unit 4 Review

35 Felix is helping his father cook dinner. After Felix adds salt to the boiling water, what will he have in the pot? A A mixture call a solution B A solution called a mixture C A mixture called a combination D A solution called a combination A A mixture call a solution Unit 4 Review

36 A Garlic B Oil C Pepper D Salt Tania's mom boils water in a pot on the stove to make soup. Which of these ingredients will dissolve in the water? D Salt Unit 4 Review

37 A It has definite shape B It can be compressed C It has definite texture D Its particles vibrate in place Each state of matter has certain physical properties. Which is a physical property of a gas? B It can be compressed Unit 4 Review

38 A The number of electrons B The number of neutrons C The number of nuclei D The number of protons Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another? D The number of protons Unit 4 Review

39 A Chemical formula B Chemical reaction C Chemical equation D Chemical compound The change in matter in which chemical bonds are broken, rearranged, and reformed is called a _____. B Chemical reaction Unit 4 Review

40 A True B False The metric system is a system of measurement used in science and throughout the world to measure matter. A True Unit 4 Review

41 A Loud, Soft, Low B Hot, Warm, Cold C Solid, Liquid, Gas D Hard, Soft, Rough In which three forms can matter be found? C Solid, Liquid, Gas Unit 4 Review

42 A Size B Weight C Density D Temperature What is a measurement of the energy or heat in matter? D Temperature Unit 4 Review

43 A Firecracker exploding B Log burning C An ice cube melting D A flashlight turning on Which is the BEST example of a physical change in matter? C An ice cube melting Unit 4 Review

44 A Never mixed B Mixed evenly C Mixed unevenly D Separated from each other In a solution, the particles of different substances are _____. B Mixed evenly Unit 4 Review

45 A Soap B Colloid C Emulsion D Suspension When you shake a mixture of sand and water, you have made a(n) _____. D Suspension Unit 4 Review

46 A Table salt B Lemonade C Garden soil D Salad dressing Which of the following is NOT a mixture? A Table salt Unit 4 Review

47 A The amount of space something takes up B The amount of mass in something C The amount of weight in an object D The amount of gravity pulling on an object What is volume? A The amount of space something takes up Unit 4 Review

48 A True B False When a substance changes phase, the chemical structure of its molecules does not change. A True Unit 4 Review


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