Calorie & kilojoule
Joule
[J]:
- Unit of
energy & work or quantity of heat
- Named
after the English scientist
- Derived SI
unit
- When a
force of 1Newton moves 1 metre, 1 Joule of work is done
- In terms
of base SI units: m2 kg s-2
- In terms
of other SI units: N m [N = m kg s-2]
Calorie
[Cal]:
- Traditional
unit
- Amount of
heat required to raise 1 g of water 1°C at atmospheric pressure
- 1 Cal = 1 kilocalorie = 4.2 kJ
- 1 calorie = 4.2 J