CAIE IGCSE Chemistry 1.1.5 Changes of State Using Kinetic Questions
Read temperature-time graphs to identify phase changes and explain constant-temperature regions.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- interpret heating and cooling curves to identify melting, boiling, freezing and condensation
- deduce melting, boiling or freezing points from temperature-time data
- explain why temperature remains constant during a change of state
- relate particle energy and separation to heating, cooling and state changes
CAIE IGCSE Chemistry 1.1.5 Changes of State Using Kinetic Questions question 1
[Maximum number: 1]
A mixture of ice and water is left to stand and the ice melts.
Which row describes what happens as the ice is melting?
temperature of
mixture
energy change
increases
average kinetic energy of particles decreases
increases
energy is used to overcome attractive forces
stays the same
average kinetic energy of particles decreases
stays the same
energy is used to overcome attractive forces
D
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