Physical/Chemical Changes + Changes of State

Question 1

Solid –> Liquid

Answer 1

Melting

Question 2

Liquid –> Solid

Answer 2

Freezing

Question 3

Liquid –> Gas

Answer 3

Evaporating/Boiling

Question 4

Gas –> Liquid

Answer 4

Condensing

Question 5

Solid –> Gas

Answer 5

Subliming

Question 6

Gas –> Solid

Answer 6

Depositing

Question 7

Define element

Answer 7

Substance made of one type of atom

Question 8

Define compound

Answer 8

Substance made of two or more types of atoms that are chemically bonded

Question 9

Define mixture

Answer 9

Substance made of two or more types of atoms that are not chemically bonded

Question 10

Define atom

Answer 10

The smallest unit of matter that retains its properties (neutral)

Question 11

Define molecule

Answer 11

Group of two or more atoms (neutral)

Question 12

Define ion

Answer 12

Atom or molecule with a charge (+ or -)

Question 13

Define foam

Answer 13

A mixture where a gas is mixed in with a solid or liquid

Question 14

Define suspension

Answer 14

A mixture when an insoluble solid is mixed in with a liquid

Question 15

Define aerosol

Answer 15

A mixture where fine solid or liquid particles are mixed in with a gas

Question 16

What will happen to gas that is compressed under extreme pressure?

Answer 16

It will turn into a liquid, and eventually a solid

Question 17

Explain one way the properties of solids and liquids are similar

Answer 17

They are both dense because their particles are touching

Question 18

Only the arrangement of the particles changes. Physical or chemical change?

Answer 18

Physical

Question 19

1.

The bonding of the particles changes. Physical or chemical change?

Answer 19

Chemical

Question 20

The changes are reversible. Physical or chemical change?

Answer 20

Physical

Question 21

The changes are irreversible. Physical or chemical change?

Answer 21

Chemical

Question 22

No new chemicals are formed. Physical or chemical change?

Answer 22

Physical

Question 23

New chemicals are formed. Physical or chemical change?

Answer 23

Chemical

Question 24

Is decomposition a physical or chemical change?

Answer 24

Chemical

Question 25

Is neutralization a physical or chemical change?

Answer 25

Chemical

Question 26

Is crystallizing a physical or chemical change?

Answer 26

Physical

Question 27

Is dissolving a physical or chemical change?

Answer 27

Physical

Question 28

Are changes of state physical or chemical changes?

Answer 28

Physical

Question 29

Is precipitation a physical or chemical change?

Answer 29

Chemical

Question 30

Is decomposition a physical or chemical change?

Answer 30

Chemical