New
New
Year 4

Melting temperatures: do and review

I can investigate the melting temperatures of common materials and evaluate my investigation.

New
New
Year 4

Melting temperatures: do and review

I can investigate the melting temperatures of common materials and evaluate my investigation.

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Lesson details

Key learning points

  1. The melting temperature is the temperature at which a material in its solid state changes to its liquid state.
  2. Thermometers can be used to measure temperature.
  3. Scientists take accurate measurements of temperature in units of degrees Celsius.
  4. The results of an investigation can often be recorded in a table, chart or graph.
  5. Results can be used to draw simple conclusions and suggest improvements.

Keywords

  • Melting temperature - The melting temperature of a material is the temperature at which it changes from solid state to liquid state.

  • Solid - A solid has a fixed shape and volume but some solids can change shape when a force is applied.

  • Liquid - A liquid can flow, has a fixed volume and takes the shape of the bottom of its container.

  • Degrees Celsius - Temperature is measured in degrees Celsius (°C).

  • Conclusion - In a conclusion, scientists explain what the results show or mean.

Common misconception

Children may think that only common materials such as ice melt at room temperature or that when something melts, the liquid is a different substance to the original solid.

Children are shown a range of materials with different melting temperatures which range from below to above room temperature. They are taught to refer to materials in a way that highlights the fact that the material is still the same substance.

Encourage children to recognise that the temperature at which each material melted may not be the lowest temperature at which it could melt and help them evaluate the investigations to work out how they could get a more accurate measurement.
Teacher tip

Equipment

Water baths (cold, warm and hot), thermometers, foil or foil cases, a range of materials to test.

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).

Lesson video

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6 Questions

Q1.
There are three of matter.
An image in a quiz
Correct Answer: states
Q2.
What do you need to do to melt a material?
An image in a quiz
cool it
Correct answer: heat it
freeze it
squash it
Q3.
Which of these materials are liquid at room temperature?
Correct answer: milk
Correct answer: oil
plastic
air
Q4.
What material is snow?
An image in a quiz
plastic
foam
Correct answer: water
wool
Q5.
What is the unit of measure used for temperature?
kg
Correct answer: degrees Celsius
cm
Newtons
Q6.
Materials in which state of matter are often invisible?
solid state
liquid state
Correct answer: gas state
Q2 Alena Brozova, Shutterstock.com Q4 "Snowman Neighbor" by MGShelton is licensed under CC BY-NC 2.0.

6 Questions

Q1.
What do we measure using a thermometer?
colour
size
Correct answer: temperature
Q2.
The __________ temperature is the temperature at which a solid changes to a liquid.
An image in a quiz
softening
cooling
Correct answer: melting
Q3.
Match the piece of equipment to what it does.
Correct Answer:thermometer,measure temperature

measure temperature

Correct Answer:data logger,records temperature values

records temperature values

Q4.
What unit, abbreviated as °C, is used to measure temperature?
An image in a quiz
Correct Answer: degrees Celsius, degrees centigrade
Q5.
Which part of an investigation might you record in a table, chart or graph?
predictions
methods
Correct answer: results
conclusions
Q6.
Which part of an investigation would be used to draw a conclusion?
Correct answer: results
methods
predictions
diagram

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