A student uses a spirit burner to determine the enthalpy change of combustion of methanol. They heat a beaker of water using the burner, and they decide to place draught shields around the apparatus.
State why using draught shields helps to give a more accurate value for the temperature change of the water.
Practise Edexcel GCSE Chemistry Heat energy changes in chemical reactions with exam-style questions for Foundation and Higher tier. 130 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
