determining energy content of food

[hassam]

there is an expt in 5090 s06 p6 qp1 how we can make its result reliable

 

[Zishi]

By using the same amount of water in both the test tubes and the distance of the burning food sample from the test tube for both foods should also be equal. Plus, replicate the experiment and take the average. That would get you 3 marks, I guess.