Edexcel IGCSE Biology · Spec 2.33B
Food Energy Practical: Reliable Measurements
Covers calculate energy transferred per gram of food burned, Identify variables and reliability improvements and Evaluate major sources of heat loss.
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Food Energy Practical: Reliable Measurements
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Spec 2.33B
What you need to know
- Calculate energy transferred per gram of food burned
- Identify variables and reliability improvements
- Evaluate major sources of heat loss
Active recall
Quick check
Answer each question before opening the answer.
How is the mass of food burned calculated?
Initial food mass minus final food mass
Why is the result only an estimate of food energy?
Some energy is transferred to the apparatus and surroundings instead of the water
How can reliability be improved?
Repeat the test for each food and calculate a mean
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