Question

chapter 2 properties of matter
class
date
section 2.2 physical properties
(pages 45 - 51)
this section discusses physical properties and physical changes. it also
explains how physical properties can be used to identify materials, select
materials, and separate mixtures.
reading strategy (page 45)
building vocabulary as you read, write a definition for each term
in the table below. for more information on this reading strategy,
see the reading and study skills in the skills and reference
handbook at the end of your textbook.

examples of physical properties (pages 45 - 47)

1. a physical property is any characteristic of a material that can be

observed or measured without changing the
of the substances in the material.

1. explain why a wooden spoon is a better choice than a metal spoon for stirring a

boiling pot of soup.

1. is the following sentence true or false? a liquid with a high

viscosity flows more slowly than a liquid with a low viscosity
at the same temperature.

1. is the following sentence true or false? discovering which of two

materials can scratch the other is a way to compare the hardness
of the materials.
match each term to its definition.
term definition

1. viscosity a. the ability of a solid to be hammered

without shattering

1. conductivity b. the temperature at which a substance

changes from a liquid to a gas

1. malleability c. the resistance of a liquid to flowing
2. melting point d. the ability to allow heat to flow
3. boiling point e. the ratio of the mass of a substance

to its volume

1. density f. the temperature at which a substance

changes from a solid to a liquid
physical science reading and study workbook • chapter 2 17

Explanation:

1. A physical property is any characteristic of a material that can be observed or measured without changing the composition of the substances in the material.
2. Wood is a poor conductor of heat compared to metal. So, a wooden spoon won't conduct heat from the boiling soup to the hand as much as a metal spoon.
3. Viscosity is the resistance of a liquid to flowing. A higher viscosity means more resistance, so it flows more slowly. So the statement is True.
4. Scratching one material with another is a common way to compare hardness (Mohs scale of hardness). So the statement is True.
5. Viscosity - c (The resistance of a liquid to flowing)
6. Conductivity - d (The ability to allow heat to flow)
7. Malleability - a (The ability of a solid to be hammered without shattering)
8. Melting point - f (The temperature at which a substance changes from a solid to a liquid)
9. Boiling point - b (The temperature at which a substance changes from a liquid to a gas)
10. Density - e (The ratio of the mass of a substance to its volume)

Answer:

1. composition
2. Wood is a poor heat conductor.
3. True
4. True
5. c
6. d
7. a
8. f
9. b
10. e