4 (a) The bar chart shows the percentage of gases in the Earth's atmosphere - Edexcel - GCSE Chemistry - Question 4 - 2011 - Paper 1
Question 4
4 (a) The bar chart shows the percentage of gases in the Earth's atmosphere.
1. Give the name of gas A.
2. Which of the gases listed below is naturally present in ... show full transcript
Worked Solution & Example Answer:4 (a) The bar chart shows the percentage of gases in the Earth's atmosphere - Edexcel - GCSE Chemistry - Question 4 - 2011 - Paper 1
Step 1
Give the name of gas A.
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Answer
Gas A is nitrogen, which can be represented as N₂.
Step 2
Which of the gases listed below is naturally present in the atmosphere?
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Answer
The correct answer is A argon. Argon is a noble gas that occurs naturally in the Earth's atmosphere.
Step 3
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The correct answer is C volcanoes. The gases in the Earth's earliest atmosphere were thought to originate from volcanic activity.
