Cambridge IGCSE Chemistry practice

Paper 3 structured question: Air quality and climate

Try the question first, then check the answer and practise the same topic again.

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Paper

Marks

Topic

Air quality and climate

Exam-style question

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Paper 3Theory (Core)2 marks

Photosynthesis is essential for producing food and oxygen.

Description

Photosynthesis not only provides food for plants but also releases oxygen, which is crucial for the survival of most living organisms.

a
State two products of photosynthesis.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)1 marks

Description

Photosynthesis occurs in plants, where they convert carbon dioxide and water into glucose and oxygen using sunlight.

a
State the word equation for photosynthesis.
Your answer
Aim for approximately 1 distinct marking point.
[1]