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Edexcel IGCSE Chemistry 1.2 state changes

Practise state-change questions by naming interconversions, adding state symbols and linking heating or cooling to particle movement.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • Name melting, freezing, boiling, evaporation, condensation or sublimation from diagrams.
  • Add correct state symbols to equations for freezing, melting or condensation changes.
  • Explain heating or cooling in terms of particle arrangement, movement and energy changes.

1.2 State changes question 1

[Maximum number: 1]

Carbon dioxide changes directly from a solid to a gas without becoming a liquid.

Give the name of the change of state from solid to gas.

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