A heating curve for water
I can use the particle model to describe the effect of heating to melt a solid or to boil a liquid.
A heating curve for water
I can use the particle model to describe the effect of heating to melt a solid or to boil a liquid.
Lesson details
Key learning points
- A random error is a chance difference between an observed value and the true value.
- Random errors can be caused by mistakes in taking readings, or by taking a reading at the wrong time.
- The temperature of a melting solid does not change as it heated.
- The temperature of a boiling liquid does not change as it is heated.
Common misconception
The molecules of a substance change when a substance melts or break down into individual atoms when it boils.
Provide opportunity for pupils to describe, in their own words, the effect on particles of the melting and boiling processes.
Keywords
Melting - the change of state from a solid to a liquid that happens at a fixed temperature for pure substances
Boiling - the change of state from a liquid to a gas that happens at a fixed temperature for pure substances
Change of state - changing from a solid to a liquid or liquid to gas (or the reverse)
Equipment
heating apparatus (Bunsen, tripod, heat resistant mat, gauze), beaker, thermometer, timer, pure ice samples, graph paper
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
Exit quiz
6 Questions
change of state from a solid to a liquid
change of state from a liquid to a gas
change of state from a liquid to a solid
change of state from a gas to a liquid
Particles vibrate about fixed positions.
Particles flow past each other.
Particles move freely past each other.