CH-593
States of matter
Chemistry · Secondary 3 · Medium · States of matter
A sample of solid iodine is gently heated until it becomes a purple gas.
Which statement best explains this change using the kinetic particle model?
Which statement best explains this change using the kinetic particle model?
- Particles gain energy, move far apart and rapidly, changing from fixed positions in a solid to widely spaced gas particles.
- Particles lose energy and become closely packed, changing from gas to solid.
- Particles expand in size so the solid turns into gas.
- Particles change into different atoms when heated, forming a gas.
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