Chapter 3

Question 1

Vapor

Answer 1

Gaseous state of a substance that is a solid or liquid at room temperature

Question 2

Substance

Answer 2

Matter of composition

Question 3

Pure substance

Answer 3

Only one type of substance, not combined with anything

Question 4

Physical property

Answer 4

Observed characteristic

Question 5

Chemical property

Answer 5

Ability of substance to combine with another substance (solubility)

Question 6

Extensive properties

Answer 6

Depend on amount of substance

Question 7

Intensive properties

Answer 7

Independent, stays the same

Question 8

Physical change

Answer 8

A substance alters without changing its composition

Question 9

Phase change

Answer 9

Transition of matter from one state to another

Question 10

Chemical change

Answer 10

One or more substances changing to a new one

Question 11

Law of conservation of mass

Answer 11

States of mass are neither created or destroyed during a chemical change

Question 12

State of matter

Answer 12

Physical forms of something

Question 13

Mixture

Answer 13

Combination of 2 or more substances

Question 14

Heterogenous mixture

Answer 14

Mixture that doesn’t blend smoothly and substances remain distinct

Question 15

Homogenous mixture

Answer 15

Mixture that has a constant composition throughout

Question 16

Solutions

Answer 16

Homogenous mixtures

Question 17

Filtration

Answer 17

Technique using barrier to separate solid from liquids

Question 18

Distillation

Answer 18

Separation technique that heats the substances

Question 19

Crystallization

Answer 19

Selection technique that forms a solid, pure particles from a solution

Question 20

Sublimation

Answer 20

Process of solid changes to vapor without melting

Question 21

Chromatography

Answer 21

Technique that separates parts of mixtures by being drawn to surface. Of another material (usually paper)

Question 22

Element

Answer 22

Pure substance that can’t be separated

Question 23

Compound

Answer 23

2 or more elements chemically combined

Question 24

Law of definite proportions

Answer 24

A compound is always composed of the same elements

Question 25

Percent by mass

Answer 25

Ratio of mass of elements to mass of compound

Question 26

Law of multiple proportions

Answer 26

Different masses of one element combined with the same relative mass of another element to form different compounds