Unit 2 matter

Question 1

Physical Properties

Answer 1

Characteristics of matter that you can observe or measure directly

Question 2

Matter

Answer 2

Anything that takes up space and has mass

Question 3

Reflectivity

Answer 3

The ability to reflect light ( physical property)

Question 4

Hardness

Answer 4

Describes how easily something can be bent of dented ( physical property)

Question 5

Flexible

Answer 5

Describes how objects can bent without breaking (physical property)

Question 6

Magnetic

Answer 6

Describes objects that are attracted to magnets, usually made of metal (physical property)

Question 7

Conductivity

Answer 7

The ability to transfer heat or electricity (physical property)

Question 8

Conductors

Answer 8

Materials that let heat or electricity travel through them easily

Question 9

Insulators

Answer 9

Materials that do not easily let heat or electricity travel through them

Question 10

Solubility

Answer 10

The ability of one substance to dissolve into another ( physical property)

Question 11

Mixture

Answer 11

A combination of two or more different substances in which the substance keep their identities

Question 12

Solution

Answer 12

A special kind of mixture that has the same composition throughout because its particles are mixed evenly

Question 13

Taco- Solution or Mixture ?

Answer 13

Mixture

Question 14

Lemonade- Solution or Mixture

Answer 14

• Solution*

Question 15

Air- Solution or Mixture

Answer 15

• Solution*

Question 16

Physical Change

Answer 16

The size, color, shape may change, but the matter itself is the same

Question 17

Is changing the state of matter a physical change or a chemical change?

Answer 17

• Physical change*

Question 18

What phase change?
Solid+ Heat = liquid

Answer 18

Melting

Question 19

What phase change ?
Liquid - Heat = Solid

Answer 19

• Evaporation*

Question 20

What phase change ?
Liquid - Heat = Liquid

Answer 20

• Condensation

Question 21

Chemical Change

Answer 21

A change in which new matter is formed

Question 22

Burning Wood -
physical change or chemical change ?

Answer 22

• Chemical change *

Question 23

Cooking eggs -
physical change or chemical change ?

Answer 23

• Chemical Change *

Question 24

The smell produced by rotting trash-
physical change or chemical change ?

Answer 24

• Chemical Change *

Question 25

Crumpling paper- physical change or chemical change ?

Answer 25

* Physical Change *

Question 26

Boiling water/ evaporating - physical change or chemical change ?

Answer 26

* Physical Change*

Question 27

Changing state of Matter Molecules are :

Answer 27

1. Packed tightly for Solid 2. Slightly separated for Liquid 3. Spread out for Gas

Question 28

Three States of Matter

Answer 28

Solid, Liquid , Gas

Question 29

Solid

Answer 29

1. Has definite shape and volume 2. Particles are packed tightly

Question 30

Liquid

Answer 30

1. Has no definite shape but definite volume 2. Particles not as tightly packed and can flow past each other

Question 31

Gas

Answer 31

1. Has neither definite shape or not definite volume 2. Particles have space between them to move freely

Question 32

Boiling Point

Answer 32

212 F

Question 33

Freezing Point

Answer 33

32 F