Unit 2 Test Content

Question 1

Matter breaks down into … and …

Answer 1

substance and mixture

Question 2

Substance breaks down into … and …

Answer 2

element and compound

Question 3

Mixture breaks down into … and …

Answer 3

homogeneous mixture and heterogeneous mixture

Question 4

can’t be separated into different kinds of matter by physical means

Answer 4

substance

Question 5

can’t be broken down into simpler substances by chemical or physical means

Answer 5

element

Question 6

contains two or more different elements chemically joined

Answer 6

compound

Question 7

contains a combination of different elements and compounds and can be separated by physical means

Answer 7

mixture

Question 8

a mixture that is the same throughout

Answer 8

homogeneous mixture (solution)

Question 9

a mixture in which different samples are not necessarily made up of exactly the same proportions of matter

Answer 9

heterogeneous mixture (mixture)

Question 10

examples of elements

Answer 10

pure gold and copper

Question 11

examples of compounds

Answer 11

water (H2O) and salt (NaCI)

Question 12

examples of homogeneous mixtures

Answer 12

salt water, coffee, soil

Question 13

examples of heterogeneous mixtures

Answer 13

trail mix and fruit salad

Question 14

a … curve goes up

Answer 14

heating

Question 15

a … curve goes down

Answer 15

cooling

Question 16

What’s the order in which a heating curve goes up?

Answer 16

1.) Solid
2.) Melting (PC)
3.) Liquid
4.) Boiling (PC)
5.) Gas

Question 17

What’s the order in which a cooling curve goes down?

Answer 17

1.) Gas
2.) Evaporation (PC)
3.) Liquid
4.) Freezing (PC)
5.) Solid

Question 18

solid to liquid

Answer 18

melting

Question 19

solid to gas

Answer 19

sublimation

Question 20

liquid to solid

Answer 20

freezing

Question 21

gas to liquid

Answer 21

condensation

Question 22

liquid to gas

Answer 22

evaporation

Question 23

occurs between 2 materials at different temperatures when they are in direct contact

Answer 23

conduction

Question 24

vertical movement of fluids due to temperature differences

Answer 24

convection

Question 25

energy transferred as heat in the form of electromagnetic

Answer 25

radiation

Question 26

materials that heat flows through easily

Answer 26

conductors

Question 27

materials that heat flows through poorly

Answer 27

insulators

Question 28

Q =

Answer 28

heat energy (J)

Question 29

m =

Answer 29

mass (g or kg)

Question 30

c =

Answer 30

specific heat (J/g°C or J/kg°C)

Question 31

△T =

Answer 31

change in temperature (°C)

Question 32

△T Equation

Answer 32

Tfinal - Tinitial

Question 33

Q Equation

Answer 33

m x c x △T

Question 34

m Equation

Answer 34

Q/ c△T

Question 35

c Equation

Answer 35

Q/ m△T

Question 36

△T Equation

Answer 36

Q/mc