Q1
What is specific heat capacity?
AHeat to raise 1kg of substance by 1°C
BHeat to raise any mass by any temperature
CTotal heat in a substance
DHeat lost during cooling only
ICSEClass 10 (ICSE)PhysicsCh 11 · Topic 1
Calorimetry
Calorimetry is the study of heat transfer and measurement, involving concepts like specific heat capacity and the principle of mixtures.
Core concept
Specific heat capacity is the amount of heat needed to raise the temperature of 1kg of a substance by 1°C, calculated as Q = mcΔT.
How it works
Heat capacity depends on the mass, specific heat capacity of the substance, and the temperature change involved.
Why it matters
The principle of mixtures (calorimetry principle) states that heat lost by a hotter body equals heat gained by a colder body when mixed, assuming no heat loss.
Key detail
Latent heat is the heat absorbed or released during a phase change (like melting or boiling) without a change in temperature.
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Quick notes
• Specific heat capacity: heat to raise 1kg by 1°C.
• Formula: Q = mcΔT.
• Heat capacity depends on mass, specific heat, temperature change.
• Principle of mixtures: heat lost = heat gained (no loss).
• This applies when mixing hot and cold bodies.
• Latent heat: heat during phase change.
• No temperature change occurs during phase change.
• Examples: melting, boiling.