Photosynthesis (Cambridge (CIE) IGCSE Chemistry): Revision Note

Exam code: 0620 & 0971

Caroline Carroll

Written by: Caroline Carroll

Reviewed by: Stewart Hird

Updated on

Photosynthesis

  • Photosynthesis is an endothermic reaction

    • Energy is taken in from the environment by chloroplasts / chlorophyll

  • The reactants for photosynthesis are carbon dioxide and water

  • They are converted into glucose and oxygen 

  • Chlorophyll (found in chloroplasts) and energy from light are required for this reaction to occur

  • The word equation for photosynthesis is:

Photosynthesis word equation

Carbon dioxide and water producing glucose and oxygen during photosynthesis

Symbol equation for photosynthesis

Extended tier only

  • The balanced symbol equation for photosynthesis is:

Balanced chemical equation for photosynthesis

Balanced symbol equation for photosynthesis

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Caroline Carroll

Author: Caroline Carroll

Expertise: Physics & Chemistry Subject Lead

Caroline graduated from the University of Nottingham with a degree in Chemistry and Molecular Physics. She spent several years working as an Industrial Chemist in the automotive industry before retraining to teach. Caroline has over 12 years of experience teaching GCSE and A-level chemistry and physics. She is passionate about creating high-quality resources to help students achieve their full potential.

Stewart Hird

Reviewer: Stewart Hird

Expertise: Chemistry Content Creator

Stewart has been an enthusiastic GCSE, IGCSE, A Level and IB teacher for more than 30 years in the UK as well as overseas, and has also been an examiner for IB and A Level. As a long-standing Head of Science, Stewart brings a wealth of experience to creating Topic Questions and revision materials for Save My Exams. Stewart specialises in Chemistry, but has also taught Physics and Environmental Systems and Societies.

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