Impact on the environment

Question 1

impact of methane on the environment

Answer 1

methane is a greenhouse gas, although at lower concentrations than CO2.

Question 2

use of catalytic converter

Answer 2

removes pollutant gases from the exhaust by oxidising and reducing them. The catalyst is heterogenous (the adsorbed/ desorbed one), where harmful gases are adsorbed onto the surface of the catalyst, undergo a reaction, then unharmful gases desorbed from the surface.

Question 3

main pollutants

Answer 3

CO, NOx, unburnt hydrocarbons
(carbon monoxide, nitrogen oxides)

they are converted into less harmful gases such as CO2, N2, and water vapour

Question 4

importance of recycling

Answer 4

waste has a huge negative impact on the environment

1. harmful chemicals and greenhouse gases are released from rubbish in landfill sites
2. landfills are filling up fast, and there isn’t much space left