Starter quiz
- When a substance changes from a solid state to a liquid state, we say that it is...
- 'melting' ✓
- A thermometer is an instrument that measures...
- 'temperature' ✓
- What instrument could you use, with a temperature sensor, to monitor and record temperature over a long period of time?
- thermometer
- data logger ✓
- data measurer
- stopwatch
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- Which state of matter has a fixed volume and a fixed shape?
- solid ✓
- liquid
- gas
-
- At what temperature does water freeze?
- 0°C
- 20°C
- 37°C
- 100°C ✓
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- Starting with the first, put these activities in the order a scientist would do them.
- 1⇔ask a question
- 2⇔plan an enquiry
- 3⇔carry out an enquiry
- 4⇔record results
- 5⇔make conclusions
Exit quiz
- The process in which a solid changes to a __________ is called melting.
- 'liquid' ✓
- Which of the following statements about ice are true?
- ice is a different material to water
- ice is water ✓
- ice is the same material as water vapour ✓
- ice melts at 100°C
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- Which phrase describes the temperature at which a material changes from its solid state to its liquid state?
- freezing temperature
- heating temperature
- melting temperature ✓
- liquid temperature
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- Materials in which states of mater have fixed volumes?
- solid state ✓
- liquid state ✓
- gas state
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- Which of the following statements about melting temperatures are true?
- All materials have the same melting temperature.
- Different materials have different melting temperatures. ✓
- The melting temperature of any material is changeable.
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- How does the work of scientists relate to melting temperatures?
- They use their knowledge of melting temperatures to design and build products.
- They ask questions and plan enquiries into the melting temperature of materials ✓
- They use their knowledge of melting temperatures to design recipes.
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Worksheet
Presentation
Lesson Details
Key learning points
- The process in which a material in the solid state changes to the liquid state is called melting.
- The melting temperature is the temperature at which a solid changes to a liquid.
- Different materials have different melting temperatures.
- Scientists ask questions about the melting temperature of different materials and plan how to answer them.
Common misconception
Children may think that only common materials 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, ranging 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.
Keywords
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.
Melting temperature - The melting temperature of a material is the temperature at which it changes from solid state to liquid state.
Degrees celsius - Temperature is measured in degrees celsius (°C).