Chemistry › Section E · Thermochemistry › Topic E.1
Energy basics
Every chemical and physical change moves energy around, usually as heat. Before you can measure or predict that heat, you need a precise vocabulary (energy, temperature, heat, system, surroundings) and one workhorse equation, q = mcΔT.
In this topic
- Energy in every change
- Forms of energy, and their conservation
- Thermal energy, temperature and heat
- System, surroundings and the sign of q
- Units of energy
- Heat capacity and specific heat
- Water's unusually high specific heat
- Calculating heat: q = mcΔT
- Worked example: heating water for tea
- Worked example: identifying a metal
- Common mistakes to avoid
- Key takeaways
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