Key idea
Temperature and heat
Sans changement d’état : Q = mcΔT
Start with the central idea, then test it against a concrete element or example. A scientific model is useful when we know what it explains — and where its limits are.
Temperature and heat
The key idea
Temperature characterizes thermal state and is linked statistically to microscopic behaviour; heat is energy transferred because of a temperature difference.
Why it matters
Confusing heat with temperature hides the physics of calorimetry, phase changes and thermal transport.
A picture to remember
Key idea
Temperature and heat
Guided example
Temperature and heat
Start with the central idea, then test it against a concrete element or example. A scientific model is useful when we know what it explains — and where its limits are.
Put it into practice
Temperature and heat
Choose a concrete case linked to Temperature and heat. Write down the known information, what you are trying to find, and the units. Then state the rule, model or trend you will use. If a calculation is involved, keep the units visible at every line; if it is conceptual, state what changes and what remains fixed.
Check your answer
A strong answer contains four things: the starting situation, the variable that changes, the direction or numerical result, and one check. The check can be a unit, an order of magnitude, a limiting case or a comparison with a familiar example.