Chapter 1

Question 1

Science

Answer 1

Knowledge based on observation and experimentation

Question 2

Chemistry

Answer 2

study of the composition, struc-
ture, and properties of matter and the changes
matter undergoes.

Question 3

Chemical

Answer 3

relating to chemistry, or the interactions of substances as studied in chemistry.

Question 4

Mass

Answer 4

measure of the amount of matter in an object

Question 5

Matter

Answer 5

Physical substance and has mass

Question 6

Atom

Answer 6

Base unit of a chemical

Question 7

Element

Answer 7

Substances that can’t be broken down using chemical reactions

Question 8

Compound

Answer 8

A thing composed of 2 or more separate elements

Question 9

Extensive property

Answer 9

Property that depends on amount of matter present

Question 10

Physical property

Answer 10

Property that is measurable

Question 11

Intensive property

Answer 11

Property that doesn’t change as amount of matter changes

Question 12

Physical change

Answer 12

Form of matter is altered but one substance does not change into another

Question 13

Change of state

Answer 13

Matter moves from one state to another

Question 14

Liquid

Answer 14

a substance that flows freely but is of constant volume

Question 15

Solid

Answer 15

Firm and stable in state

Question 16

Gas

Answer 16

substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).

Question 17

Plasma

Answer 17

an ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge

Question 18

Chemical property

Answer 18

characteristic or behavior of a substance that may be observed when it undergoes a chemical change or reaction

Question 19

Chemical change

Answer 19

process where one or more substances are altered into one or more new and different substances.

Question 20

Chemical reaction

Answer 20

rearrangement of the molecular or ionic structure of a substance

Question 21

Reactant

Answer 21

Substance that undergoes change during a reaction

Question 22

Product

Answer 22

Formed as result of chemical reaction

Question 23

Mixture

Answer 23

Material made up of 2+ substances physically combined

Question 24

Homogeneous

Answer 24

Uniform composition and properties throughout

Question 25

Solution

Answer 25

Liquid mixture where the solute is uniformly

Question 26

Heterogeneous

Answer 26

Process involving substances in different phases

Question 27

Pure substance

Answer 27

Definite composition

Question 28

Group

Answer 28

Elements that have similar chemical properties (column on periodic table)

Question 29

Family

Answer 29

Elements that have similar chemical properties (column on periodic table)

Question 30

Period

Answer 30

Horizontal row on periodic table

Question 31

Metal

Answer 31

Element that readily forms positive ions and has metallic bonds

Question 32

Nonmetal

Answer 32

Brittle and poor conductors

Question 33

Metaloides

Answer 33

Intermediate in properties between metals and non metals