MATTER UNIT TEST CORRECTIVES
Skill 1: Read section 2-1,2-2,2-5,2-6 page 21 to 29 and 34 to 41 in your textbook
1. Define substance, element, compound, mixture
2. Do questions 4 and 14 page 44.
3. Why is a solution always a mixture, but a mixture is not always a solution?
4. Compare and contrast homogeneous and heterogeneous mixtures.
5. Compare and contrast intensive and extensive properties.
6. Do question 26 page 45
Skill 2: Read section 2.4 page 29 to 33 of your textbook
1. Define chemical change, physical change, physical property, and chemical property
2. Do questions 7, 12 and 19 page 44
3. Why is a change in state (phase of matter) considered a physical change?
Skill 3: Read section 5.8 page 142 to 146 in your textbook
1. Define density, do not just write a mathematical equation.
2. A steel mill has two pieces of identical iron. One piece of iron (A) has a mass twice as big as the other. How does the volume of the first piece (A) compare to that of the other piece of iron?
3. A neutron star is formed in part as the original star collapses upon itself into a smaller volume. If none of the star is lost during the collapse, how does the density of the neutron star compare to that of the original star?
4. Do problems 56 b, 60, and 62d on page 151.
5. Suppose you have sample of two substances, A and B. The volume of the two samples are the same. Substance A has a density 2.5 times as large as the density of B. Which substance has the largest mass? How can you tell?
Skill 4: Read section 2.3 page 28 - 29 and page 441
1. Define solid, liquid, gas, and plasma
2. Do questions 5 and 6 page 44
3. Do questions 12, 14 page 463
4. Do question 24 page 464
5. How does the melting point of a substance compare to the freezing point of the same substance?
6. Describe what happens to the atmospheric pressure as you ascend higher? What causes this change?
7. Discuss the similarities and differences between the arrangement of molecules in liquid water versus steam, and in liquid water versus ice.