Chemistry > AQA QUESTION and MARK SCHEMES > AQA COMBINED SCIENCE - HIGHER - CHEMISTRY PAPER 2 - PREDICTED PAPER 2021 (All)
AQA COMBINED SCIENCE - HIGHER - CHEMISTRY PAPER 2 - PREDICTED PAPER 2021
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AQA Chemistry Paper 2 Higher Combined Science Predicted Paper 2022 a)Chromatography can be used to separate out solutions. Describe how Rf= distance moved by substance Distance moved by solvent ... c)State if the original substance was pure or a mixture. d)Suggest what the origin line could have been drawn in. a)The Earth’s atmosphere has changed over time. Describe and explain the changein levels of oxygen and carbon dioxide. b)State the names of two of the gases that made up the Earth’s early atmosphere. c)The early atmosphere has been likened to other planets in our solar system. Givethe name of one of these planets. (1 mark) d)Combustion of fossil fuels releases pollutants into the air. Describe the effect thatthe release of carbon particles can have on the atmosphere and on humans. [Show More]
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