Year 7 - Science
Energy and substance
Heating and cooling
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explains energy transfer between objects due to temperature differences, through conduction or radiation, the role of insulators, and thermal equilibrium. It covers particle arrangements and motions in solids, liquids, and gases and Brownian motion.
Lesson Summary
You will learn to describe differences between the energy of different substances at the same temperature.
Key Notes
- It is easier to increase the temperature of some materials than others.
- The mass of particles and the attractive forces between particles are different in different substances.
- Different substances need different amounts of heating to reach the same temperature.
- The same amount of different materials at the same temperature can cause different amounts of heating.
- The higher the specific heat capacity, the more energy 1 kg of a substance has, at a temperature, in the thermal store.
Vocabulary To Learn
- heating: when energy transfers from high to low temperature
- specific heat capacity: the property of a material that determines how much energy needs to be transferred to it to increase its temperature
- thermal store: the energy a substance has because of the random motion of its particles
Common Mistakes To Avoid
- Pupils rarely develop an intuitive understanding of what specific heat capacity means when it is introduced through an equation.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
It is easier to increase the temperature of some materials than others. The mass of particles and the attractive forces between particles are different in different substances.
2. Define this scientific word and use it in context. 'heating'
when energy transfers from high to low temperature. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pupils rarely develop an intuitive understanding of what specific heat capacity means when it is introduced through an equation. Correction: Use this lesson to develop a qualitative understanding of the specific heat capacity of objects, without introducing the equation for specific heat capacity.
More Lessons In This Unit
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