A student investigates how different substances change state when they are heated and then cooled.
| Substance | State before heating | State when hot | State after cooling |
|---|---|---|---|
| Glass rod | solid | solid | solid |
| Paraffin wax | solid | liquid | solid |
| Egg batter | liquid | solid | solid |
What name is given to the process when the paraffin wax changes from a solid to a liquid?
condensing
evaporating
melting
freezing
84 exam-style questions on Edexcel GCSE Chemistry 3.1 States of matter, covering 3.1.1 The three states of matter and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.