Matter

Question 1

What is an element?

Answer 1

An element has only one type of atom

Question 2

What is a compound?

Answer 2

A compound is two or more different atom that are CHEMICALLY joined together.

Question 3

What is the different between a compound and a mixture?

Answer 3

The different between a compound and a mixture is that a compound is two to more different atoms that are chemically joined and a mixture is not.

Question 4

What is the link between hydrogen, lithium, sodium, potassium, rubidium, caesium, francium.

Answer 4

They are all in group 1 on the periodic table.

Question 5

What group… as you go down the group, the less reactive.

Answer 5

Group 7

Question 6

What is a halogen?

Answer 6

Group 7 element

Question 7

What are the properties of group 7?

Answer 7

They change from gas, liquid, solid.
They have low melting points
They are halogens
They are non metal.

Question 8

What is a polymer?

Answer 8

It’s a group of molecules that are link together in a chain

Question 9

Which gases exchange in a gas exchange?

Answer 9

Oxygen and carbon dioxide

Question 10

What is a scientific name for air sac?

Answer 10

Alveoli