First Test 2nd Trimester

Question 1

kinnetic energy

Answer 1

energy of motion

Question 2

potential energy

Answer 2

energy of position

Question 3

calorie

Answer 3

unit of energy-

amount of heat needed to raise the tempature of pure liquid water by 1 degree celsius

Question 4

mixture

Answer 4

physical combination of 2+ substances

Question 5

compound

Answer 5

chemical combination of 2+ elements

Question 6

element

Answer 6

a pure substance made of 1 type of atom all atoms of a element have the same number of protons

Question 7

atomic #

Answer 7

number of protons

Question 8

reactivity

Answer 8

describes how elements interact with other elements

Question 9

electrons

Answer 9

determine how elements act- what groupings they are in

Question 10

different groups

Answer 10

alkali metals, alkaline earth metals, transition metals, halogens, noble gases

Question 11

what year did mendeleev create the periodic table

Answer 11

1869 (late 1800s)

Question 12

periodic table

Answer 12

metals- left, middle, bottom

nonmetals- right

Question 13

glass

Answer 13

pros- can be recycled over and over again into a bottle

cons- very expensive, breakable

Question 14

aluminium

Answer 14

pros- highly recycled

cons- takes a lot of energy

Question 15

plastic

Answer 15

pros- can be recycled into other materials

cons- main ingredeant crude oil