Calculate energy released from a food sample

GCSE · Combined Science · CCEA · B1.3 — Food and energy: balanced diet, food groups, food tests and energy from food

Question

CCEA Double Award Unit B1 (Higher)

A student burns 0.50 g of crisp under a boiling tube containing 25 cm³ of water. The water temperature rises from 21.0 °C to 49.0 °C. Specific heat capacity of water = 4.2 J/g/°C.

(a) Calculate the energy transferred to the water. (2 marks) (b) Calculate the energy released per gram of crisp. (1 mark) (c) State one reason why this is an underestimate of the true energy content. (1 mark)

4 marks · take your time before peeking.

Sign up to try the next 30 problems

Save your streak, mark answers against the spec, and build a daily revision habit. Free during public beta — no card, no auto-renew.

Create a free account I already have one

Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.