Chapter 2

Question 1

What are the 2 properties of matter?

Answer 1

extensive and intensive

Question 2

Extensive Properties

Answer 2

depends on the amount of matter

Question 3

Intensive Properties

Answer 3

depends on the type of matter, not the amount

Question 4

Substance

Answer 4

has a uniform and definite composition

the composition of a material is fixed

Question 5

Physical Property

Answer 5

can be observed or measured without changing the composition

Ex. any phase change

Question 6

What are the three states of matter?

Answer 6

solid, liquid, and gas

Question 7

Solid

Answer 7

definite shape and volume

Question 8

Liquid

Answer 8

definte volume but no definite shape
takes the shape of the container
can flow

Question 9

Gas

Answer 9

neither definite shape nor volume
fills container
can flow

Question 10

Vapor

Answer 10

Gaseous state of a substance that is generally a solid or liquid at room temp.

Question 11

Physical Changes

Answer 11

changes the apperance of the substance, not the composition

Ex. any phase change

Question 12

List and Describe the 4 phase changes.

Answer 12

boiling: l-g
condensing: g-l
freezing: l-s
melting: s-l

Question 13

What are the two types of physical change?

Answer 13

reversible and irreversible

Question 14

Reversible

Answer 14

can go back to the beginning

Ex. any phase change

Question 15

Irreversible

Answer 15

cannont go back to the beginning

Ex. cutting

Question 16

Mixture

Answer 16

a physical blend of two or more components

the composition may vary

Question 17

What are the two types of mixtures?

Answer 17

heterogenous and homogenous

Question 18

Heterogenous

Answer 18

composition is not uniform

Ex. concrete

Question 19

Homogenous

Answer 19

composition is uniform throughout
another name is solution
Ex. vinegar

Question 20

Phase

Answer 20

any substance that is uniform in composition and properties

Question 21

Filtration

Answer 21

the process that seperates a solid from a liquid in heterogenous mixtures

Question 22

distilation

Answer 22

boiling a liquid to produce a vapor that is condensed back into a liquid

Question 23

Do any two substances have the same pase changes?

Answer 23

no

Question 24

Element

Answer 24

the simpilest form of matter that has its own unique properties
Ex, Oxygen, Carbon

Question 25

Compound

Answer 25

two or more elements chemically combined

Ex. Water, Glucose

Question 26

Chemical Change

Answer 26

changes the chemical composition of the substance
cannot go back to the beginning
Ex. Burning

Question 27

Chemical Symbols

Answer 27

first leter is capatilized

if there are three letters it is human made

Question 28

Chemical Property

Answer 28

the ability to undergo a chamical change

Ex. Rusting, rotting

Question 29

Chemical Reaction

Answer 29

same as chemical change

changes the composition

Question 30

What are the possible clues of a chemical change?

Answer 30

transfer of energy, change in color, the production of gas, or formation of a precipitate

Question 31

Precipitate

Answer 31

when a solid forms and settles from a liquid mixture

Question 32

Law of Conservation of Mass

Answer 32

states that in any physical or chamical change, mass is conserved
mass cannot be created or destroyed