A student places liquid ethanol into a sealed flask. The mass of the liquid ethanol is 62 g62\text{ g}62 g.
The student cools the flask until all the liquid ethanol freezes into solid ethanol.
Write down the mass of the solid ethanol produced.
Explain your answer to (a)(i).
Describe one difference between a physical change and a chemical change.
27 exam-style questions on OCR GCSE Physics Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.