Explain why the sublimation of dry ice (solid carbon dioxide) into carbon dioxide gas is classified as a physical change rather than a chemical change.
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Markscheme
3.1 States of matter Questions
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.