Chemistry: Chapter 1

Question 0

Chemical

Answer 0

Any substance that has a definite composition

Question 1

Chemistry

Answer 1

The study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes

Question 2

Mass

Answer 2

A measure of the amount of matter

Question 3

Matter

Answer 3

Anything that has mass and takes up space

Question 4

Atom

Answer 4

The smallest unit of an element that maintains the chemical identity of that element

Question 5

Element

Answer 5

A pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom

Question 6

Compound

Answer 6

Substance that can be broken down into simple stable substances. Each compound is made from the atoms of two or more elements that are chemically bonded.

Question 7

Extensive property

Answer 7

Depends on the amount of matter that is present

Question 8

Intensive property

Answer 8

Does not depend on the amount of matter present

Question 9

Physical property

Answer 9

A characteristic that can be observed or measured without changing the identity of the substance

Question 10

Physical change

Answer 10

A change in a substance that does not involve a change in the identity of the substance

Question 11

Change of state

Answer 11

A physical change of a substance from one state to another

Question 12

Solid

Answer 12

Matter in the solid state has definite volume and definite shape

Question 13

Liquid

Answer 13

Matter in the liquid state has a definite volume but an indefinite shape

Question 14

Gas

Answer 14

Matter in the gas state has neither definite volume nor definite shape

Question 15

Plasma

Answer 15

High-temperature physical state of matter in which atoms lose most of their electrons

Question 16

Chemical property

Answer 16

Relates to a substance’s ability to undergo changes that transform it into different substances

Question 17

Chemical change/reaction

Answer 17

A change in which one or more substances are converted into different substances

Question 18

Reactants

Answer 18

The substances that react in a chemical change

Question 19

Products

Answer 19

The substances that are formed by the chemical change

Question 20

Mixture

Answer 20

A blend of two or more kinds of matter, each of which retains its own identity and properties

Question 21

Homogenous

Answer 21

Uniform in composition

Question 22

Solutions

Answer 22

Homogenous mixtures

Question 23

Heterogeneous

Answer 23

Not uniform throughout

Question 24

Pure substance

Answer 24

Has a fixed composition and is homogenous

Question 25

Groups/families

Answer 25

The vertical columns of the periodic table

Question 26

Periods

Answer 26

The horizontal rows of elements in the periodic table

Question 27

Metal

Answer 27

An element that is a good electrical conductor and a good heat conductor

Question 28

Nonmetal

Answer 28

An element that is a poor conductor of heat and electricity

Question 29

Metalloid

Answer 29

An element that has some characteristics of metals and some characteristics of nonmetals