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GCSE Chemistry Paper 2 > Chemistry of the Atmosphere > Flashcards

Chemistry of the Atmosphere Flashcards

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1
Q

What was the earth’s atmosphere like 4.6 billion years ago?

A

It consisted of mostly CO2 due to intense volcanic eruptions.

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2
Q

What is the gas that makes up most of today’s atmosphere?

A

Nitrogen.

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3
Q

What percentage of the earth’s atmosphere is made of oxygen?

A

21%

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4
Q

What percentage of carbon dioxide is in the earth’s atmosphere?

A

0.04%

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5
Q

What is the word equation for photosynthesis?

A

Carbon dioxide+water (goes to) glucose+oxygen

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6
Q

What caused the levels of oxygen in the atmosphere to increase?

A

Plants evolved and began to photosynthesize.

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GCSE Chemistry Paper 2 (5 decks)

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