Unit 2 - Matter

Question 1

Matter

Answer 1

Anything that takes up space and has mass

Question 2

Particles are closely packed; definite shape and volume

Answer 2

Solid

Question 3

Particles are more loosely packed and can move over and around each other; variable shape and definite volume

Answer 3

Liquid

Question 4

Particles are widely distributed and moving fast; variable shape and volume

Answer 4

Gas

Question 5

Highly ionized particles moving very fast

Answer 5

Plasma

Question 6

Solid becomes liquid

Answer 6

Melting

Question 7

Liquid becomes solid

Answer 7

Freezing

Question 8

Liquid becomes gas at boiling point

Answer 8

Boiling

Question 9

Liquid becomes gas

Answer 9

Evaporation

Question 10

Gas becomes liquid

Answer 10

Condensation

Question 11

Solid becomes gas

Answer 11

Sublimation

Question 12

Gas becomes solid

Answer 12

Deposition

Question 13

Pure Substance

Answer 13

a sample of matter with both definite and constant composition and distinct chemical properties

Question 14

Element

Answer 14

a pure substance that cannot be broken down by any means

Question 15

Compound

Answer 15

a pure substance that is made up of two or more elements that are chemically bonded together

Question 16

How can compounds be separated into their component elements?

Answer 16

only through chemical changes/reactions

Question 17

Mixture

Answer 17

two or more pure substances combined together that are NOT bonded together

Question 18

How can mixtures be separated?

Answer 18

Through physical changes

Question 19

Homogeneous mixture

Answer 19

a mixture where the components are evenly mixed all the way down to the molecular level

Question 20

Another word for homogeneous mixture

Answer 20

solution

Question 21

Heterogeneous mixture

Answer 21

a mixture where the components of the mixture are NOT evenly mixed all the way down to the molecular level

Question 22

Which has larger particles: a suspension or a colloid?

Answer 22

Suspension

Question 23

Which will settle out eventually: a suspension or a colloid?

Answer 23

Suspension

Question 24

What type of mixture can the Tyndall Effect help to identify?

Answer 24

Colloid

Question 25

Distillation

Answer 25

A method used to separate two pure substances with different boiling points

Question 26

Filtration

Answer 26

A method used to separate a solid substance out of a liquid (heterogeneous mixtures only)

Question 27

Chromatrography

Answer 27

A method used to separate solutions that relies on the different attractions of each component towards another substance

Question 28

Physical Property

Answer 28

a property that can be observed without changing the nature of the substance

Question 29

Chemical Property

Answer 29

a property that can only be observed by changing the nature of the substance

Question 30

Physical Change

Answer 30

a change that does not result in a different substance

Question 31

Chemical Change

Answer 31

a change that results in a new/different substance

Question 32

Extensive Property

Answer 32

physical property that depends on the amount of matter present

Question 33

Intensive Property

Answer 33

physical property that does not depend on the amount of matter present

Question 34

Ductility

Answer 34

ability to draw into thin wires

Question 35

Malleability

Answer 35

ability to shape into flat sheets

Question 36

Refractive Index

Answer 36

Measurement of how much a substance bends a light ray as it passes through it

Question 37

Recognizing a chemical change

Answer 37

``` Formation of a precipitate Change in color Production of a gas Change in energy (temperature) Change in smell ```