When purple iodine vapor (I2(g)\text{I}_2\text{(g)}I2(g)) comes into contact with a cold surface, it deposits directly to form shiny, dark-grey solid iodine crystals (I2(s)\text{I}_2\text{(s)}I2(s)).
Explain why this deposition process is classified as a physical change rather than a chemical change.
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.