Specific Heat Capacity — GCSE Physics Revision
Revise Specific Heat Capacity for GCSE Physics. Step-by-step explanation, worked examples, common mistakes and exam-style practice aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP.
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Go to Energy Changes in SystemsWhat is Specific Heat Capacity?
Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C. It is a measure of how much thermal energy a substance can store. Water has a high specific heat capacity, which is why it is used in central heating systems.
Board notes: Covered by all major boards (AQA, Edexcel, OCR) at both Foundation and Higher tiers.
Step-by-step explanationWorked example
How much energy is needed to heat 2kg of water from 20°C to 100°C? The specific heat capacity of water is 4200 J/kg°C. Solution: Energy = mass x specific heat capacity x change in temperature. Energy = 2kg x 4200 J/kg°C x (100°C - 20°C) = 672,000J or 672kJ.
Mini lesson for Specific Heat Capacity
1. Understand the core idea
Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C. It is a measure of how much thermal energy a substance can store.
Can you explain Specific Heat Capacity without copying the notes?
2. Turn it into marks
How much energy is needed to heat 2kg of water from 20°C to 100°C? The specific heat capacity of water is 4200 J/kg°C.
Underline the method, evidence, or command-word move that would earn credit in GCSE Energy.
3. Fix the likely mark leak
Watch for this mistake: Confusing specific heat capacity with heat capacity. Specific heat capacity is per kilogram of the substance.
Write one correction rule before doing another practice question.
Practise this topic
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Specific Heat Capacity practice questions
These are original StudyVector questions for revision practice. They are not official exam-board questions.
Question 1
In one GCSE sentence, explain what Specific Heat Capacity is testing.
Answer: Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C. It is a measure of how much thermal energy a substance can store.
Mark focus: Precise definition and topic focus.
Question 2
A Specific Heat Capacity question uses an unfamiliar context. What should the answer do before adding detail?
Answer: It should name the process, variable, equation, particle model, or evidence being tested, then explain the result using precise scientific vocabulary.
Mark focus: Method selection and command-word control.
Question 3
A student makes this mistake: "Confusing specific heat capacity with heat capacity. Specific heat capacity is per kilogram of the substance." What should their next repair task be?
Answer: Do one Specific Heat Capacity question and review the mistake type.
Mark focus: Error correction and next-step practice.
Specific Heat Capacity flashcards
Core idea
What is the main idea in Specific Heat Capacity?
Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C. It is a measure of how much thermal energy a substance can store.
Common mistake
What mistake should you avoid in Specific Heat Capacity?
Confusing specific heat capacity with heat capacity. Specific heat capacity is per kilogram of the substance.
Practice
What is one useful practice task for Specific Heat Capacity?
Answer one Specific Heat Capacity question and review the mistake type.
Exam board
How should you use board notes for Specific Heat Capacity?
Covered by all major boards (AQA, Edexcel, OCR) at both Foundation and Higher tiers.
Common mistakes
- 1Confusing specific heat capacity with heat capacity. Specific heat capacity is per kilogram of the substance.
- 2Using the wrong units. Specific heat capacity is measured in J/kg°C (Joules per kilogram per degree Celsius).
- 3Forgetting to include the change in temperature in the calculation. The formula requires the change in temperature, not just the final temperature.
Specific Heat Capacity exam questions
Exam-style questions for Specific Heat Capacity with mark-scheme style solutions and timing practice. Aligned to AQA, Edexcel, OCR, WJEC, Eduqas, CCEA, Cambridge International (CIE), SQA, IB, AP specifications.
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Step-by-step method
Step-by-step explanation
4 steps · Worked method for Specific Heat Capacity
Core concept
Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C. It is a measure of how much thermal energy a substance can store. Water has a high specif…
Frequently asked questions
What is the formula for specific heat capacity?
The formula is: Change in Thermal Energy (J) = Mass (kg) x Specific Heat Capacity (J/kg°C) x Change in Temperature (°C).
Why does a sandy beach get hotter than the sea on a sunny day?
Sand has a lower specific heat capacity than water. This means it takes less energy to raise the temperature of sand, so it heats up and cools down much more quickly than the sea.