An engineer investigates the relative reactivity of four different metals by adding each metal to a sample of aqueous copper(II) sulfate (extCuSO4 ext{CuSO}_4extCuSO4) solution and measuring the maximum temperature increase.
State two variables, apart from the mass of the metals, that the engineer must control to ensure a fair test.
Practise Edexcel GCSE Chemistry Obtaining and using metals with exam-style questions for Foundation and Higher tier. 100 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.