Unit 7 Matter
1. The color of a substance is a (physical / chemical) property.
2. The freezing of water is a (physical / chemical) change.
3. Flammability is a (physical / chemical) property.
4. The breaking of a glass window is a (physical / chemical) change.
5. Using oxygen to separate molten copper sulfide into copper and sulfur dioxide is a (physical / chemical) change.
6. Matter is defined as anything that has ____ and ______
7. A substance that cannot be broken down into simpler substances is a _____
8. The smallest unit of a substance that behaves like the substance is _____
9. Which state of matter will hold its shape without a container?
10. The kinetic theory states that the higher the temperature, the (faster / slower) the particles that make up a substance move.
11. The change of a substance from a solid directly to a gas is called ____
12. All changes of the state of matter require ____
13. During a chemical or physical change, energy may be ____ but not ____ or ____
14. Matter that has a definite volume and a definite shape is a ____.
15. A gas-like mixture with no definite volume or shape that is made up of positively and negatively charged particles is a ____.
16. Matter that has a definite volume but no definite shape is a ____.
17. According to ____, (PTV) if you decrease the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase.
18. According to ____, as the temperature of a gas decreases, the pressure exerted by the gas will decrease if the volume stays constant.
19. As a sample of matter is heated, its particles move more (slowly / quickly).
20. The idea that matter is made up of small particles that are in constant motion is ____.
21. The particles that make up a solid move ____ than do the particles that make up a gas.
22. As the temperature of a gas increases, the volume of the gas will ____ if the pressure remains the same.
23. As the volume of a gas decreases, the pressure of the gas will ____ if the temperature remains the same.
24. List several examples of a chemical change?
25. List several examples of a physical change?
26. Digesting food is an example of
27. Grinding quartz crystals down to produce sand is an example of a
28. A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?
29. A substance that is made up of only one kind of atom is a(an)___
30. If a material contains three elements joined in a fixed proportion, it is a(an) ___
31. A mixture that appears to contain only one substance is a(an) ___
32. Give an example of a heterogeneous mixture?
33. You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” The soy milk is most likely a ___
34. Filtration can be used to separate mixtures based on
35. List several clues that a physical change has occurred.
36. List several clues that a chemical change has occurred.
37. What is a precipitate?
38. Matter that has a definite volume but no definite shape is a
39. If you move a substance from one container to another and its volume changes, the substance is a
Figure 3-1
40. In which of the substances in Figure 3-1 are the forces of attraction among the particles so weak that they can be ignored under ordinary conditions?
41. Which substance in figure 3-1 is a liquid?
42. Which substance in figure 3-1 is a solid?
43. What factors would affect the pressure of an enclosed gas? (PTV)
44. Raising the temperature of a gas will increase its pressure if the volume of the gas
45. What will cause a decrease in gas pressure in a closed container?
46. What type of change occurs when water changes from a solid to a liquid?
47. The phase change that is the reverse of condensation is ___
48. During a phase change, the temperature of a substance ___
49. The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is ___
Figure 2-1
50. Based on the information in Figure 2-1, which substances would be a gas at 0ºC?
51. Based on the information in Figure 2-1, the melting point of acetic acid is___.
52. Based on the information in Figure 2-1, the freezing point of nitrogen is ___.
53. Why does the air pressure in a car’s tires increase after a long drive?
Figure 2-2
54. Analyzing Data Which of the mixtures in Figure 2-2 is a solution? Explain how you know.
55. Analyzing Data Which of the mixtures in Figure 2-2 is a suspension? Explain how you know.
Figure 3-2
56. Interpreting Graphics Identify the phase changes in Figure 3-2 that are labeled a, b, and c.
Unit 9 Matter
Answer Section
MODIFIED TRUE/FALSE
1. ANS: T PTS: 1
2. ANS: F, physical
3. ANS: F, chemical
4. ANS: T PTS: 1
5. ANS: F, chemical
MULTIPLE CHOICE
6. ANS: B PTS: 1
7. ANS: C PTS: 1
8. ANS: C PTS: 1
9. ANS: A PTS: 1
10. ANS: A PTS: 1
11. ANS: D PTS: 1
12. ANS: C PTS: 1
13. ANS: D PTS: 1
14. ANS: D PTS: 1
15. ANS: C PTS: 1
16. ANS: B PTS: 1
17. ANS: B PTS: 1
18. ANS: D PTS: 1
19. ANS: B PTS: 1
20. ANS: D PTS: 1
21. ANS: D PTS: 1
22. ANS: B PTS: 1
23. ANS: B PTS: 1
24. ANS: B PTS: 1
25. ANS: A PTS: 1
26. ANS: C PTS: 1
27. ANS: D PTS: 1
28. ANS: D PTS: 1
29. ANS: C PTS: 1
30. ANS: D PTS: 1
31. ANS: A PTS: 1
32. ANS: C PTS: 1
33. ANS: D PTS: 1
34. ANS: D PTS: 1
35. ANS: A PTS: 1
36. ANS: D PTS: 1
37. ANS: B PTS: 1
38. ANS: A PTS: 1
39. ANS: C PTS: 1
40. ANS: C PTS: 1
41. ANS: B PTS: 1
42. ANS: A PTS: 1
43. ANS: D PTS: 1
44. ANS: C PTS: 1
45. ANS: A PTS: 1
46. ANS: D PTS: 1
47. ANS: C PTS: 1
48. ANS: C PTS: 1
49. ANS: A PTS: 1
50. ANS: C PTS: 1
51. ANS: B PTS: 1
52. ANS: D PTS: 1
53. ANS:
The constant motion of the tires on the road causes the tires and the air in the tires to warm up. The increase in temperature increases the average kinetic energy of the air in the tires. The frequency and force of collisions between particles increase, which increase the air pressure.
54. ANS:
Mixture B; it does not scatter light, does not separate into layers, and cannot be separated by filtration.
55. ANS:
Mixture C; it separates into layers and it can be separated by filtration.
56. ANS:
a. vaporization, b. melting, c. freezing