Chemistry Ch1 Vocabulary

Question 1

Chemical

Answer 1

Any substance that has a definite composition

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 properties of that element

Question 5

Element

Answer 5

Is a pure substance made of only one kind of atom

Question 6

Compound

Answer 6

A substance that’s made from the atoms of two or more elements that are chemically bonded

Question 7

Extensive properties

Answer 7

Depend on the type of matter that’s present

Question 8

Physical properties

Answer 8

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

Question 9

Physical change

Answer 9

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

Question 10

Change of state

Answer 10

Is a physical change of substance from one state to another

Question 11

Solid

Answer 11

Has definite volume and shape

Question 12

Liquid

Answer 12

Has a definite volume but an indefinite shape

Question 13

Gas

Answer 13

Has never definite volume nor definite shape

Question 14

Plasma

Answer 14

A high-temperature physical state of matter in which atoms lose their electrons

Question 15

Chemical properties

Answer 15

Relates to a substances ability to undergo changes that transform it to different substances

Question 16

Chemical change| chemical reaction

Answer 16

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

Question 17

Reactants

Answer 17

The substances that react in a chemical change

Question 18

Products

Answer 18

The substances that are formed by chemical change

Question 19

Mixture

Answer 19

Is a blend of two or more kinds of matter each of which retains its own identity and properties

Question 20

Homogeneous

Answer 20

Mixtures that are uniform in composition

Question 21

Solutions

Answer 21

Homogeneous mixtures are also called solutions

Question 22

Heterogeneous

Answer 22

Mixtures that are NOT uniform throughout

Question 23

Pure substance

Answer 23

Has a fixed composition and differs from a mixture

Question 24

Groups - families

Answer 24

The vertical columns of the periodic table

Question 25

Periods

Answer 25

The horizontal rows of elements in periodic table

Question 26

Metal

Answer 26

Is an element that is a good conductor of heat and electricity

Question 27

Nonmetal

Answer 27

An element that is a poor conductor of heat and electricity

Question 28

Metalloid

Answer 28

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