atmosphere 🎈

Question 1

composition of air

Answer 1

78% nitrogen, 21% oxygen, 1% noble gases, 0.3& carbon dioxide

Question 2

state the air pollutants

Answer 2

1) carbon monoxide
2) sulfur dioxide
3) oxides of nitrogen

Question 3

source, harmful effects and prevention for carbon monoxide

Answer 3

source: incomplete combustion of fuels
effects: binds irreversibly with oxygen, reduces blood carrying capabilities, tissue death
treatment: use a catalytic converter

Question 4

source, harmful effects and prevention for sulfur dioxide

Answer 4

source: combustion of fossil fuels, volcanic eruptions
effects: causes eye irritation and breathing difficulties and acid rain
treatment: flue gas desulfurisation
SO2 + CaCO3 -> CaSO3 + CO2

Question 5

source, harmful effects and prevention for oxides of nitrogen

Answer 5

source: oxygen from air and nitrogen from air react at high temperatures in engines, lightning
effects: bronchitis and acid rain
treatment: catalytic converter

Question 6

harmful effects of acid rain

Answer 6

corrodes limestone buildings, metal structures, damage trees and vegetation, destroys aquatic life

Question 7

equation for catalytic converter action

Answer 7

CO + NO -> CO2 + N2

Question 8

consequence of global warming

Answer 8

rising sea levels lead to flood

Question 9

process of depletion of ozone layer

Answer 9

1) at high atmospheres, chlorofluorocarbons (CFCs) are decomposed by ultraviolet light from the sun, into reactive chlorine atoms
2) chlorine atoms destroy ozone molecules by reacting to form chlorine monoxide and oxygen gas

Question 10

why can one molecule of CFC destroy 10000 ozone molecules?

Answer 10

chlorine monoxide can react with a reactive oxygen atoms, regenerating Cl atom which goes on to destroy more ozone molecules

Question 11

effects of ozone depletion

Answer 11

causes skin cancer, eye disease