Ch 1

Question 1

The three states of matter

Answer 1

1 solid state
2 liquid state
3 gas state

Question 2

Solid state

Answer 2

Composed of highly organized particles that lie close together

Question 3

Liquid state

Answer 3

Is composed of particles that lie close together but are less organized than the solid state

Question 4

Gas state

Answer 4

Is composed of highly disorganized particles that lie far apart

Question 5

Matter can be classified as

Answer 5

A pure substance or a mixture

Question 6

Element

Answer 6

Is a pure substance that cannot be broken down into simpler substances by a chemical reaction

Question 7

Compound

Answer 7

Is a pure substance formed from two or more elements

Question 8

Mixture

Answer 8

Is composed of more than one substance

A mixture can be separated into its components by physical changes.

Question 9

Pure substance

Answer 9

A substance that contains a single component, and has a constant composition regardless of the sample size

Question 10

A pure substance cannot be

Answer 10

Broken down to other pure substances by any physical change

Question 11

Mixtures can be formed from

Answer 11

Solids
Liquids
Gases

Question 12

Solid

Answer 12

Has a definite volume and maintains its shape regardless of the container in which it’s placed.

Question 13

Liquid

Answer 13

Has a definite volume but takes on the shape of the container it occupies.

Question 14

Gas

Answer 14

Has no definite shape or volume.

The particles of gas expand to fill the volume and assume the shape of whatever container they are put in.

Question 15

Physical properties

Answer 15

Are those that can be observed or measured without changing the composition of the material

Question 16

Common physical properties include:

Answer 16

Melting point (mp)
Boiling point (bp)
Solubility
Color
Odor

Question 17

Physical change

Answer 17

Alters a substance without changing its composition

Question 18

Chemical properties

Answer 18

Are those that determine how a substance can be converted to another substance

Question 19

Chemical change (reaction)

Answer 19

Converts one material into another

Question 20

Chemistry

Answer 20

Is the study of matter— it’s composition, properties and transformations

Question 21

Matter

Answer 21

Is anything that has mass and takes up volume

Question 22

Mass

Answer 22

Is a measure of the amount of matter in an object

Question 23

Weight

Answer 23

Is the force that matter feels due to gravity

Question 24

Exact number

Answer 24

Results from counting objects or is part of a definition

Question 25

inexact number

Answer 25

Results from a measurement or observation and contains some uncertainty

Question 26

Significant figures

Answer 26

Are all the digits in a measured number including one estimated digit

Question 27

Temperature

Answer 27

Is a measure of how hot or cold an object is

Question 28

3 temperature scales used

Answer 28

Fahrenheit Celsius Kelvin