Calorie is the unit used to express chemical energy in food.
Any unit of energy can be used to describe the energy content of food.
calorie--
kilojoule joule k Cal Cal
1) The unit for any type of energy is the joule. 2) In some contexts, such as food, the old-fashioned unit "calorie" is still used.
calories
The SI unit for energy - any type of energy - is the joule. For food, another unit, the calorie, is still often used.
One energy unit starting with C is a calorie, which is a unit of energy commonly used in nutrition to measure the energy content of food. Another energy unit is a coulomb, which measures electrical charge.
It is a more convenient unit of measurement.
Calories. Actually the unit called Calorie in food energy is the Kilocalorie, ie 1000 calories.
The recommended unit for any type of energy is, of course, the joule. The older unit, calorie, is still often used for food. If spelled with a capital "C", "Calorie", it usually means a kilocalorie.
The SI unit of energy is the Joule The SI unit of energy is the Joule