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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

How Carbon Dioxide Decreased (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'How Carbon Dioxide Decreased' from the broader topic Chemistry Of The Atmosphere. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which reaction shows how calcium ions combine with carbonate ions in seawater to form limestone, removing dissolved carbon?
Which of these statements correctly links ocean chemistry and long-term CO2 storage?
Which balanced equation shows how plants remove carbon dioxide from the atmosphere during photosynthesis?
Which of the following is a modern engineered technique that aims to mimic geological CO2 removal (a long-term decrease pathway)?
Which chemical formula represents calcium carbonate, the main mineral in limestone that stores carbon?
Which simple balanced equation represents the formation of calcium carbonate from dissolved CO2 and dissolved calcium?
Which marine organisms contributed to lowering atmospheric CO2 by forming shells of calcium carbonate?
Which human activity today reverses the ancient processes that reduced atmospheric CO2 (thus increasing CO2 instead)?
What visible change in limewater is used in the laboratory to show carbon dioxide is present (a test often used when demonstrating CO2 uptake and release)?
Which geological process stores atmospheric carbon dioxide as solid rock and so reduced CO2 levels over long time scales?
Which action would increase the long-term geological removal of atmospheric CO2?