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Chapters 5 TEST: Properties and Changes of Matter

Multiple Choice (2 points each)

Identify the choice that best completes the statement or answers the question.

____ 1. The energy of moving particles is called ____.



a.

kinetic energy

c.

atomic energy

b.

latent energy

d.

potential energy

____ 2. If an object’s density is less than that of the fluid it is in, it will ____.



a.

sink

c.

melt

b.

float

d.

boil

____ 3. Compare the mass of an ice cube to the mass of the water once the cube is completely melted.



a.

The mass of water formed equals the mass of ice.

c.

The mass of water formed is less than the mass of ice.

b.

The mass of water formed is more than the mass of ice.

d.

The mass of water formed does not depend on the mass of ice.

____ 4. The formula for density is ____.



a.

D = m/V

c.

D = V/m

b.

D – m = V

d.

D – V = m

____ 5. Box A and box B weigh the same amount. Box A is smaller than box B. Which is more dense?



a.

Box A

c.

Their densities are equal.

b.

Box B

d.

You can’t tell.

____ 6. Which of the following is an example of a chemical property?



a.

the ability to burn

c.

the ability to evaporate

b.

the ability to melt

d.

the ability to freeze

____ 7. Which of the following can be a characteristic of both a physical and a chemical change?



a.

change in size

c.

change in density

b.

change in color

d.

change in mass

____ 8. Maria and Miguel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the result of a chemical reaction. Miguel disagreed. What would you tell them to solve this argument.



a.

It is a change of state, solid to gas, due to the addition of energy.

c.

cause the fuse was lit and energy is added, it is a physical reaction.

b.

The color changes and the release of energy indicate a chemical reaction.

d.

It is an endothermic reaction because energy was added; therefore it is a chemical reaction.

____ 9. When determining whether a chemical reaction has taken place, you observe and look for several indicators. Which would be considered an indication that a chemical reaction or chemical change has taken place?



a.

Solid melts.

c.

Substance dissolves

b.

Heat is given off.

d.

Substance changes shape.

____ 10. In a beaker, sugar is dissolved in water, and then the water is heated and evaporates. The sugar is recovered, and heat is again applied. Vapor is released, and the material in the beaker changes from white to black. What must you know to determine if a chemical change occurred?



a.

the boiling point of water

c.

the boiling point of sugar

b.

the identity of the black substance

d.

temperature at which sugar evaporates

____ 11. Which of these would indicate a chemical change has occurred?



a.

Salt is dissolved into water.

c.

Solid iron is heated until it turns into a liquid.

b.

A metal is added to an acid and hydrogen gas bubbles are formed.

d.

A child colors a picture with a crayon.

____ 12. 20g of sugar is stirred into a beaker containing 100 g of water. What will be the mass of the solution after the sugar has been is completely dissolved?



a.

20g

c.

80g

b.

100g

d.

120g

____ 13. Silver is a white metal and is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does not react with water but it does react with nitric acid. Silver tarnishes when exposed to air or light.

What is a physical property of silver?

a.

tarnishes

c.

does not react with water

b.

reacts with nitric acid

d.

density

____ 14. boiling point density conductivity color

These may all be classified as the ______________ of a substance.

a.

physical properties

c.

reactive properties

b.

chemical properties

d.

nuclear properties

____ 15. The law of conservation of matter states that during a chemical reaction, the amount of matter



a.

increases..

c.

disappears.

b.

decreases.

d.

stays the same.

____ 16. water freezing to form ice



melting a gold chain to create a gold ring

breaking a window into smaller pieces

These may all be classified as:



a.

chemical change.

c.

increasing surface volume.

b.

chemical decomposition.

d.

physical change.

____ 17. reactants → products

Based on the Law of Conservation of Matter, describe the relationship between the mass of the reactants and the mass of the products.


a.

The mass of the reactants equals the mass of the products.

c.

The mass of the reactants is greater than the mass of the products.

b.

The mass of the reactants is less than the mass of the products.

d.

The mass of the products is always greater than the mass of the reactants.

____ 18. You could use a balance to determine a __________ called __________.



a.

chemical property; mass.

c.

physical property; mass.

b.

physical property; weight.

d.

physical property; density.

____ 19. To find the density of an object, you would use a graduated cylinder to find what characteristic of the object?



a.

length

c.

mass

b.

volume

d.

weight

____ 20. If water is at 50° C, and energy is removed from the water until it is at -10° C (while maintaining a constant pressure of 760 mm), describe the phase change of the water.



a.

solid water to liquid water

c.

liquid water to water vapor

b.

liquid water to solid water

d.

solid water to water vapor


Matching (1 point each)

Identify each of the items listed below as either a physical property, chemical property, physical change, or chemical change.

a.

physical property

c.

physical change

b.

chemical property

d.

chemical change




____ 21. iron rusts in moist air

____ 22. an apple is red

____ 23. baking a cake

____ 24. breaking glass

____ 25. density

____ 26. burning a match

____ 27. melting ice

____ 28. melting point

____ 29. cutting wood

____ 30. gold does not rust

____ 31. burning paper

____ 32. the car door is rusting

____ 33. sodium can react with water

____ 34. crumpling a piece of paper

____ 35. hardness

____ 36. a compound is broken down into elements

____ 37. magnetizing a piece of metal

____ 38. water can be decomposed (broken apart) by an electric curren



t

Short Answer/Essay

40. Silver is a white metal and is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver does not react with water but it does react with nitric acid. Silver tarnishes when exposed to air or light. Silver is not acidic.



Using the information provided, make a chart listing the physical and chemical properties of silver. (4 points)

41. Find the density of a block with a length of 4.0 cm, a width of 2.0 cm, a height of 1.0 cm, and a mass of 16 g. Would this block float or sink in water? (show all work) (4 pts)



Essay

42.a)Write a JSM paragraph explaining why the diagram to the right shows a chemical change and not a physical change.



(10 pts, remember to include a claim, 2 pieces of evidence, 2 commentary/reasonings, and a conclusion)

b) In at least two sentences, explain why the chemical reaction seen here obeys the Law of Conservation of Matter. (5 pts)


BONUS: Explain how acid rain is formed, and some problems it can cause. (5 pts

)

Chapters 4 and 5: Phases, Properties, and Changes of Matter

Answer Section

MULTIPLE CHOICE

1. ANS: A PTS: 1

2. ANS: B PTS: 1

3. ANS: A PTS: 1

4. ANS: A PTS: 1

5. ANS: A PTS: 1

6. ANS: A PTS: 1

7. ANS: B PTS: 1

8. ANS: B PTS: 1

9. ANS: B PTS: 1

10. ANS: B PTS: 1

11. ANS: B PTS: 1

12. ANS: B PTS: 1

13. ANS: D PTS: 1

14. ANS: A PTS: 1

15. ANS: A PTS: 1

16. ANS: D PTS: 1

17. ANS: C PTS: 1

18. ANS: C PTS: 1

19. ANS: B PTS: 1

20. ANS: B PTS: 1

MATCHING

21. ANS: D PTS: 1

22. ANS: A PTS: 1

23. ANS: D PTS: 1

24. ANS: C PTS: 1

25. ANS: A PTS: 1

26. ANS: D PTS: 1

27. ANS: C PTS: 1

28. ANS: A PTS: 1

29. ANS: C PTS: 1

30. ANS: B PTS: 1

31. ANS: D PTS: 1

32. ANS: D PTS: 1

33. ANS: B PTS: 1

34. ANS: C PTS: 1

35. ANS: A PTS: 1

36. ANS: D PTS: 1

37. ANS: C PTS: 1

38. ANS: D PTS: 1

SHORT ANSWER

39. ANS:

The line on the graph would rise smoothly until it approached 100°C. The temperature levels off at the boiling point as the water changes into water vapor.

PTS: 1


40. ANS:

Physical: white, metal, conducts heat & electricity, density

Chemical: reactivity, corrosion

PTS: 1


41. ANS:

Weigh them. The heavier box is more dense.

PTS: 1

42. ANS:



0.5, float

PTS: 1


ESSAY

43. ANS:

The higher the temperature of the material, the faster the particles that make it up will move. The lower the temperature of the material, the slower the particles that make it up will move

PTS: 1


44. ANS:

Answers will vary. Answers should include that the reason the glass is wet on the outside is that water vapor has cooled and caused condensation to take place. The ice is water in its solid state, the water is in its liquid state, and the water vapor that condenses is water in its gaseous state. Students should also include that the reason the ice cubes cool the water is that heat transfer occurs, which lowers the temperature of the water and raises the temperature of the ice cubes, casing them to melt and change form the solid to the liquid state.



PTS: 1

45. ANS:



6.57 g/mL

PTS: 1


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