An industrial chemist investigates the relative reactivity of five different metals, to assess their suitability for displacing copper from industrial waste streams, by adding each metal to a sample of aqueous copper(II) sulfate and measuring the maximum temperature increase. In each trial, 1.5 g of granular metal is used.
State two control variables concerning the copper(II) sulfate solution that must be kept constant to ensure the experimental results are valid.
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.