Question

name class
chapter 2 properties of matter
using physical properties (page 48)

1. the box below contains three steps that can be used to identify a material. put them in the correct order.

test a sample of the unknown.
compare the results with data for known materials.
decide which properties to test.
a.
b.
c.

1. is the following sentence true or false? usually, people consider only one property when choosing a material.

using properties to separate mixtures (page 50)

1. circle the letter for each process that is commonly used to separate mixtures.

a. filtration
b. distillation
c. precipitation

1. distillation converts seawater into ______. circle the correct answer.

small particles fresh water pure salt
recognizing physical changes (page 51)

1. is the following sentence true or false? in a physical change, some of the substances in a material change, but the properties of the material stay the same.
2. circle the letter for each process that is a reversible physical change.

a. wrinkling a shirt
b. freezing water
c. cutting hair

Explanation:

Order the steps to identify a material

$$
LATEXBLOCK0
$$

Determine truth value of choosing materials

$$ \text{False (Usually, people consider a set of properties, not just one.)} $$

Identify processes used to separate mixtures

$$
LATEXBLOCK1
$$

Identify the product of seawater distillation

$$ \text{fresh water} $$

Determine truth value of physical changes

$$ \text{False (In a physical change, the substances stay the same, but some properties change.)} $$

Identify reversible physical changes

$$
LATEXBLOCK2
$$

Answer:

Question 9

a. Decide which properties to test.
b. Test a sample of the unknown.
c. Compare the results with data for known materials.

Question 10

false

Question 11

a, b

Question 12

fresh water

Question 13

false

Question 14

a, b