practical: investigate the energy content in a food sample

Question 1

how to investigate the energy content of food?

Answer 1

burn a known mass of the food and use the thermal energy released to heat the water

Question 2

what are the steps to completing this practical?

Answer 2

• measure 25cm3 of water
• pour into boiling tube and record starting temperature
• the food is lit over a bunsen then under a boiling tube of water to heat it
• measure the finishing temp of the water and calculate the temp change