Hydrocarbons such as octane are used as car fuels. The list names the gases found in a car exhaust. carbon dioxide carbon monoxide nitrogen nitrogen dioxide octane water vapour State which two gases in the list show that incomplete combustion has occurred in this car engine.
Describe a test for carbon dioxide. test observed result
Two natural sources of methane in the atmosphere are leaks of natural gas and waste gases from animals. Give one additional natural source of methane in the atmosphere.
Complete this sentence about the effect of an increase in the concentration of methane in the atmosphere. Methane is a [BLANK] gas because it absorbs and then re-emits infrared radiation. This leads to a rise in atmospheric temperature called [BLANK] [BLANK].
Cars are fitted with catalytic converters to cut the quantity of harmful pollutant gases released in car exhausts. Describe how catalytic converters remove pollutant gases from car exhausts.