science exam (chemistry)

Question 1

what is matter?

Answer 1

anything that takes up space (has volume and mass)

Question 2

pure substances (element and compound)

Answer 2

element: cannot be broken down
compound: is made up of two or more substances

Question 3

mixtures (heterogenous and homogenous)

Answer 3

heterogenous: it is harder to pull apart (ex. Jello)
homogenous: it is easy to pull apart (ex. pizza)

Question 4

calculating PEN

Answer 4

P= atomic number
E: atomic mass
N: Mass# - Atomic #

Question 5

periods and groups

Answer 5

periods: up and down
groups: side to side

Question 6

what are metals, non-metals, and metalloids

Answer 6

Metals: located on the left side of the staircase. Malleable, ductile
Non-metals: located on the right side of the staircase. can be gas, liquid, or room temp
Metalloids: located along the staircase

Question 7

chemical families (Alkali metals, alkaline earth metals, halogens, noble gases)

Answer 7

Alkali metals: group 1
alkaline earth metals: group 2
halogens: group 17
noble gases: group 18

Question 8

Space questions:
what planets are terrestrial and gas

Answer 8

Terrestrial: earth, mars, mercury, and venus
Gas: jupiter, saturn, neptune, and uranus

Question 9

What is the general order of the planets

Answer 9

mercury, venus, earth, mars, jupiter, saturn, uranus, neptune

Question 10

Canada’s contributions to space exploration and technology

Answer 10

canada has collaborated with ESA and NASA