Test 2/20/14

Question 1

observation

Answer 1

information gathered using the 5 senses

Question 2

inference

Answer 2

logical explanation based on prior knowledge

Question 3

hypothesis

Answer 3

testable prediction “if…then..”

Question 4

chemical reaction

Answer 4

a reaction when a chemical interacts with a different chemical

Question 5

control

Answer 5

does not change throughout the whole procedure

Question 6

evidence

Answer 6

a statement that proves something is right

Question 7

product

Answer 7

an article or substance that is manufactured or refined for sale

Question 8

reactant

Answer 8

a substance that takes part in and undergoes a change in a chemical reaction

Question 9

reclamation

Answer 9

to retrieve or recover

Question 10

filtrate

Answer 10

a liquid that has been passed through a filter

Question 11

surface water

Answer 11

water on the surface (river, stream, ocean)

Question 12

groundwater

Answer 12

water in the ground (well, aquifer)

Question 13

aquifer

Answer 13

water stored underground in a bedrock

Question 14

biological contamination

Answer 14

when a living or once living organism enter the water (mold, fungi, poop)

Question 15

chemical contamination

Answer 15

when chemicals like fertilizer or gas get into the water from the street drains

Question 16

temperature

Answer 16

a measure of the average kinetic energy of a substance

Question 17

phases change due to

Answer 17

potential energy

Question 18

potential energy

Answer 18

energy due to position

Question 19

kinetic energy

Answer 19

energy of motion

Question 20

when the temp. is changing it is

Answer 20

kinetic energy

Question 21

when the phase is changing it is

Answer 21

potential energy

Question 22

solid has a

Answer 22

definate shape

Question 23

what is happening when a shape changes

Answer 23

the molecules are either spreading or coming together

Question 24

when is a melting point

Answer 24

0 degrees celsius

Question 25

how would you react if you were in willow grove and you discovered your water was contaminated

Answer 25

i would try to get people aware of the situation and tell them why it is dangerous.

Question 26

what are some types of water pollution

Answer 26

biological types would be a living or once living organism that enters that water. This could vary from human waste to mold or fungi (e. coli, cryptosperidium). Chemical would be something like gas or exhaust from a car or fertilizer from the your lawn.

Question 27

why do phases change

Answer 27

a change in potential energy

Question 28

what is an aquifer

Answer 28

water that is stored underground with a bedrock

Question 29

what is a phase of matter

Answer 29

solid, liquid, gas

Question 30

liquid to solid

Answer 30

freezing

Question 31

solid to liquid

Answer 31

melting

Question 32

a+bc------->ac+b

Answer 32

single replacement

Question 33

zinc+copper chloride------->copper+zinc chloride

Answer 33

single replacement

Question 34

pq+rs------->ps+rq

Answer 34

double replacement

Question 35

watershed

Answer 35

groundwater

Question 36

solid

Answer 36

definite shape, molecules are touching in a fixed position

Question 37

liquid

Answer 37

no definite shape but molecules are still touching

Question 38

gas

Answer 38

no definite shape or volume molecules are separate. constant motion

Question 39

if the tempature has gone from -4 to 0

Answer 39

kinetic

Question 40

if a substance is melting

Answer 40

increase in potential

Question 41

if a substance is freezing

Answer 41

decrease in potential

Question 42

what are some types of groundwater

Answer 42

aquifer, watershed, well

Question 43

what are some types of surface water

Answer 43

ponds, oceans, rivers, etc.