2 c Gases in the atmosphere

Question 1

What are the main gases in the air

Answer 1

-Nitrogen
-Oxygen
-Argon
-Carbon dioxide

Question 2

Boiling points of Nitrogen and carbon dioxide

Answer 2

• -196
• -78

Question 3

Percentage of nitrogen in the air

Answer 3

78%

Question 4

Percentage of oxygen in the air

Answer 4

21%

Question 5

Percentage of argon in the air

Answer 5

1%

Question 6

Percentage of carbon dioxide in the air

Answer 6

0.04

Question 7

What is thermal decomposition

Answer 7

Breaking down a substance using heat

Question 8

Explain the effect of carbon dioxide on the environment

Answer 8

Greenhouse gas -> global warming -> sea level rise -> floods -> loss of biodiversity

Question 9

Are metal oxides acidic or alkaline

Answer 9

Alkaline

Question 10

Are non-metal oxides acidic or alkaline

Answer 10

Acidic

Question 11

Reaction of oxygen with sodium or magnesium product

Answer 11

White solid

Question 12

Reaction of oxygen with iron or copper product

Answer 12

Black solid

Question 13

Reaction of oxygen with carbon or sulfur product

Answer 13

Colourless gas

Question 14

Reaction of oxygen with hydrogen product

Answer 14

Water