A student heated a sample of hydrated magnesium sulfate in a crucible to determine the mass of water of crystallisation lost.
The student heated the crucible strongly using a blue, roaring Bunsen flame and placed a lid on the crucible.
State why the student used a blue, roaring flame and a lid.
258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.