13. Atoms can disappear completely in some chemical reaction - true or false?
Possibly.
True.
False.
Unknown.
14. Name the main element that makes up coal.
Sulfur.
Carbon.
Nitrogen.
Carbon dioxide.
15. When hydrocarbons burn in plenty of oxygen, the atoms involved rearrange themselves into carbon dioxide and what else?
Carbon.
Hydrolic action.
Hydrogen oxide.
Hydrogen.
16. What effects do nitrogen oxides have on the environment?
It unknown by scientists.
It turns to acid rain and damages statues/buildings, kills fish, kills trees etc.
It doesn't, nothing happens to them.
It reacts with nitrates in the soil and causes sea levels to rise and adds to global warming.
17. Name two things that everyone could do in order to reduce carbon dioxide pollution.
Use less electricity.
Reuse more.
Use less energy.
Recycle more.
18. How do MOT tests help combat air pollution?
They can show you what types of things can be attached to your car to reduce the pollution.
They can clear out any problems that will cause more pollutants to be created in the engine of the car.
Cars emissions can be checked and people may be fined for producing to many pollutants.
They can show why your car produces so much pollution.
19. Describe how nitrogen dioxide is produced when fossil fuels are burnt.
Fuels in a car engine burn and create nitrogen monoxide, then once the carbon monoxide is in the air it will react with oxygen to give nitrogen dioxide.
Fossil fuels burn and create excess nitrogen so it's put in a combiner and turned into nitrogen dioxide for experiments.
Fuels in a car engine burn and create nitrogen monoxide, then once the nitrogen monoxide reacts with more nitrogen in the atmosphere is turns into nitrogen dioxide.
Fossil fuels are burnt and creates nitrogen. The nitrogen reacts with oxygen in the air and creates nitrogen dioxide.
20. When a hydrocarbon fuel burns, with what substance in the air do the hydrogen and carbon atom combine?