Clean Air

Question 0

What are the main two gases found in dry air?

Answer 0

Nitrogen and oxygen

Question 1

What is the percentage of today’s clean air?

Answer 1

78% nitrogen 21% oxygen and 0.035 % carbon dioxide

Question 2

Which two processes decrease oxygen levels in the atmosphere ?

Answer 2

Respiration and combustion

Question 3

Which two bases were contained in the earths early atmosphere?

Answer 3

Ammonia and carbon dioxide

Question 4

Explain the change in levels of gases in the atmosphere

Answer 4

1:The earliest atmosphere contained ammonia and carbon dioxide. These came from inside the earth and were often released through volcanoes. 2: the temperature of the planet fell, the water vapour condensed to form oceans. 3: the evolution of plants meant photosynthesis feud eves the amount of carbon dioxide and increased the amount of oxygen in the air

Question 5

How is carbon monoxide formed?

Answer 5

From complete combustion in a car engine

Question 6

How is sulfur dioxide made?

Answer 6

When fossil fuels that contain suffer impurities are burned which also causes acid rain

Question 7

What types of pollution are cause day oxides of nitrogen?

Answer 7

Photochemical smog and acid rain

Question 8

How can carbon monoxide be changed in to carbon dioxide?

Answer 8

Catalytic converter

Question 9

What is the equation which converts carbon my in to carbon dioxide?

Answer 9

Carbon monoxide ➕ nitrogen oxide ➡️ nitrogen ➕ carbon dioxide