test 2 matter

Question 1

do solids have a shape

Answer 1

yes

Question 2

do solids have a volume

Answer 2

yes

Question 3

how are the particles of solids

Answer 3

they are tight

Question 4

how is it to compress solids

Answer 4

it is difficult

Question 5

do liquids have a shape

Answer 5

no

Question 6

do liquids have volume

Answer 6

yes

Question 7

how are the particles of liquids

Answer 7

loose

Question 8

how is compressing liquids

Answer 8

difficult

Question 9

does gas have a shape

Answer 9

no

Question 10

does gas have volume

Answer 10

no

Question 11

how are the particles of gas

Answer 11

very loose

Question 12

how is compressing gas

Answer 12

easy

Question 13

what do all particles do

Answer 13

they vibrate

Question 14

what does state depend on

Answer 14

temperature and pressure

Question 15

how does a solid become a liquid

Answer 15

melting or fusion

Question 16

how does a liquid become a gas

Answer 16

vaporization or evaporation

Question 17

how does a gas become a solid

Answer 17

deposition

Question 18

how does a solid become a gas

Answer 18

sublimation

Question 19

how does a gas become a liquid

Answer 19

condensation

Question 20

how does a liquid become a solid

Answer 20

solidification, crystallization, freezing

Question 21

what is a pure substance

Answer 21

the same type of particles throughout

Question 22

what are the two types of pure substances

Answer 22

elements and compounds

Question 23

what is an element

Answer 23

a pure substance made of one kind of atom, can not be broken down by chemical means (or physical)

Question 24

what is a compound

Answer 24

a pure substance made of two or more elements joined by chemical bonds, and combines in fixed proportions

Question 25

what is a mixture

Answer 25

substances are physically mixed together

Question 26

what are the two types of mixtures

Answer 26

homogenous and heterogeneous

Question 27

what is a homogenous mixture

Answer 27

a mixture that is uniform throughout . you can not see different layers. can also be called a solution

Question 28

what is a heterogeneous mixture

Answer 28

a mixture that is not uniform throughout, you ca see layers

Question 29

how are mixtures separated

Answer 29

physically

Question 30

the properties of a compound are different from what

Answer 30

the properties of the elements

Question 31

why are the properties of a compound different from the properties of the elements

Answer 31

because when the elements combine chemically their properties change

Question 32

the properties of a mixture are the same as what

Answer 32

the properties of substances

Question 33

why are the properties of mixture the same as the properties of substances

Answer 33

because they were mixed physically, not chemically

Question 34

what are the ways that you can separate a mixture

Answer 34

``` picking the pieces out magnetism evaporation crystallization decantation filtration centrifugation distillation chromatography ```

Question 35

what is evaporation

Answer 35

a gas separating from a mixture

Question 36

what is crystallization

Answer 36

a solid separating from a liquid

Question 37

what is decantation

Answer 37

pouring off a liquid after the solid settles at the bottom

Question 38

what is filtration

Answer 38

separating a solid from a liquid using filter paper

Question 39

what is centrifugation

Answer 39

separate a solution by density

Question 40

what is distllation

Answer 40

separate a solution by boiling points

Question 41

what is chromatography

Answer 41

separate a solution by rate at which its components are absorbed

Question 42

what is physical property

Answer 42

an aspect that is observed without changing matter

Question 43

what is luster

Answer 43

the ability to reflect light

Question 44

what is viscosity

Answer 44

the thickness of a liquid

Question 45

what is solubility

Answer 45

the ability to dissolve

Question 46

what is conductivity

Answer 46

ability to conduct electricity

Question 47

what is ductility

Answer 47

ability to drown into a wire

Question 48

what is malleability

Answer 48

ability to be hammered into thin sheets

Question 49

what is chemical property

Answer 49

an aspect that is observed by changing matter

Question 50

what is effervescent

Answer 50

giving off bubbles

Question 51

what is extrinsic property also called

Answer 51

extensive property

Question 52

what is extrinsic property

Answer 52

depends on the amount of volume

Question 53

what is intrinsic property also called

Answer 53

intensive property

Question 54

what is intrinsic property

Answer 54

does not depend on the amount of matter

Question 55

what is melting point

Answer 55

temperature that a solid becomes a liquid

Question 56

what is a boiling point

Answer 56

the temperature that a liquid becomes a solid

Question 57

what is a freezing point

Answer 57

the temperature that a liquid becomes solid

Question 58

what is a physical change

Answer 58

a change in matter that does not change the identity of a substance. a new substance does not form

Question 59

what is a chemical change

Answer 59

a change in matter that changes the identity of a substance. a new substance does form

Question 60

What is the Law of Conservation of Mass

Answer 60

states that mass is not created or destroyed during a chemical change

Question 61

what are the main chemical change evidences

Answer 61

gas, light, color, odor, endothermic, exothermic, precipitate

Question 62

what is endothermic

Answer 62

a substance that absorbs heat (cool container)

Question 63

what is exothermic

Answer 63

a substance that gives off heat (warm container)

Question 64

what is a precipitate

Answer 64

an insoluble solid that forms in a solution