Revision1

Question 1

Name 3 states of matter

Answer 1

Gas liquid solid

Question 2

What is the proses of a solid turning into a gas

Answer 2

Subliming

Question 3

Is water a pure substance. Why?

Answer 3

No. Because it has other elements / compounds in it.

Question 4

What is a element

Answer 4

Contains only one type of atom

Question 5

What is a compound

Answer 5

Contains more than one type of atom chemically bonded together

Question 6

What is a pure substance

Answer 6

A substance that has only one type of element / compound

Question 7

How can you remove salt from sea water if you don’t want to keep the water

Answer 7

Evaporation

Question 8

How can you remove salt from sea water if you do want to keep the water

Answer 8

Simple distillation

Question 9

What method can you use to examine different substances in a liquid

Answer 9

Chromotography

Question 10

How do you calculate rf value

Answer 10

Distance moved by the spot divided by distance moved by the solvent

Question 11

How can you separate two liquids

Answer 11

Fractional distillation