Chemistry 08 review

Question 1

What is matter

Answer 1

Anything that has mass and takes up space

Question 2

Solid to liquid

Answer 2

Melting

Question 3

Liquid to solid

Answer 3

solidification

Question 4

Liquid to gas

Answer 4

evaporation

Question 5

Gas to liquid

Answer 5

condensation

Question 6

Gas to solid

Answer 6

Deposition

Question 7

Solid to gas

Answer 7

Sublimation

Question 8

Exothermic

Answer 8

Heat or light is GIVEN OFF
E.G nuclear reaction, lighting a match

Question 9

Endothermic

Answer 9

Heat or light is ABSORBED
E.G Evaporation, cooking an egg

Question 10

Two types of mixtures

Answer 10

Homogenous and Heterogeneous

Question 11

Two types of pure substances

Answer 11

Elements and compounds

Question 12

Mixtures

Answer 12

Not chemically combined
can be separated
E.G trail mix

Question 13

Homogenous mixtures

Answer 13

Homo=same
E.G juice, jello, salt water

Question 14

Heterogeneous mixture

Answer 14

Hetero=different
E.G Snow globes, salad dressing, trail mix

Question 15

Pure substances

Answer 15

Same material
Same properties

Question 16

List three examples of Physical properties

Answer 16

Colour
*Texture
*Hardness
*Solubility
*Density
*Melting Point
*Boiling Point
*Malleability

Question 17

list three examples of Chemical Properties

Answer 17

*Reactivity (or lack of)
*Flammability/combustibility
*Reactivity with acids or oxygen

Question 18

Elements

Answer 18

Cannot be broken down
Unique physical/chemical properties
only made up of 1 type of atom
118 unique elements

Question 19

Diatomic Elements

Answer 19

element that is bonded to itself
two atoms

Question 20

Name all 7 diatomic Elements

Answer 20

Iodine
Nitrogen
Oxygen
Fluorine
Hydrogen
Bromine
Chlorine

Question 21

Compounds

Answer 21

Two or more elements that have chemically bonded
Different properties than the elements it’s made of
Chemical reactions create or break apart compounds