DF10

Question 1

complete combustion occurs…

Answer 1

when a substance burns in plentiful oxygen

Question 2

incomplete combustion occurs…

Answer 2

when a substance burns in a limited supply of oxygen

Question 3

incomplete combustion of hydrocarbons

Answer 3

carbon monoxide and water formed (sometimes soot)

Question 4

complete combustion of hydrocarbons

Answer 4

carbon dioxide and water formed

Question 5

formation of nitrogen oxides

Answer 5

nitorgen and oxygen gas react in the high temperatures of vehicle engines

Question 6

formation of sulfur dioxide

Answer 6

released when fuels containing sulfur are burnt

Question 7

formation of acid rain (sulfur dioxide)

Answer 7

sulfur dioxide reacts with water in the atmospher to form sulfuric IV acid (WEAK)
sulfur dioxide oxidised to dulfur trioxide in the stratosphere, this then reacts with water in the atmosphere to form sulfuric VI acid (STRONG)

Question 8

formation of acid rain (nitrogen oxides)

Answer 8

nitrogen oxides react with water and oxygen in the atmosphere to form nitric V acid (STRONG)

Question 9

impacts of acid rain

Answer 9

caues breathing difficulties, corrodes limestone buildings, kills forests and life in lakes

Question 10

photochemical smog

Answer 10

primary pollutants reacted upon by sunlight to produce secondary pollutants (eg. ozone, nitrogen dioxide, nitric acid)
causes haziness, reduced visibility in the air and respiratory problems