Fossil fuels contain carbon and hydrogen - AQA - GCSE Chemistry - Question 1 - 2014 - Paper 1
Question 1
Fossil fuels contain carbon and hydrogen.
1 (a) (i) Use the Chemistry Data Sheet to help you to answer this question.
Complete Figure 1 to show the electronic stru... show full transcript
Worked Solution & Example Answer:Fossil fuels contain carbon and hydrogen - AQA - GCSE Chemistry - Question 1 - 2014 - Paper 1
Step 1
Complete Figure 1 to show the electronic structure of a carbon atom.
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Answer
The electronic structure of a carbon atom includes 2 electrons in the first shell and 4 electrons in the second shell. This can be represented as:
• •
• • • •
Where the dots represent electrons.
Step 2
Complete the word equation for the oxidation of hydrogen.
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Answer
The word equation for the oxidation of hydrogen is:
hydrogen + oxygen -> water
Step 3
Name two products of burning coal that have an impact on the environment.
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Answer
Carbon dioxide
Sulfur dioxide
Step 4
What impact does each of the products named have on the environment?
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Answer
Carbon dioxide:
Causes global warming due to its greenhouse effect, leading to climate change and sea-level rise.
Sulfur dioxide:
Causes acid rain, which can harm plants, erode buildings, and acidify water bodies.
