Chemistry Aqa Paper 2 Foundation Tier |102 Questions| With Correct Answers.

brown {Ans: What colour precipitate forms when sodium hydroxide solution is added to iron (III) ions?}a reaction where molecules are broken down by heating them {Ans: Cracking is an example of thermal decomposition. What does this mean?}white {Ans: What colour precipitate forms when sodium hydroxide solution is added to magnesium ions?}propanoic acid {Ans: Name this}an element or compound not mixed with anything else {Ans: What is a pure substance?}makes limewater go milky / cloudy {Ans: What is the test for carbon dioxide?}Nitrogen, hydrogen {Ans: What are the raw materials needed for the Haber process}alkene {Ans: What type of hydrocarbon is this?}bleaches damp litmus paper {Ans: What is the test for chlorine?}fermentation: sugar --> carbon dioxide + ethanol {Ans: how do plants make ethanol?}sulfur dioxide {Ans: apart from producing carbon dioxide, what pollutants are produced from burning coal?}more fertiliser needed to grow crops for a higher population {Ans: why is the production of ammonia more important than it was 50 years ago?}Dissolved in oceans to form sedimentary rock and trapped underground to eventually form fossil fuels {Ans: in the development of our atmosphere, what first reduced the level