What is a calorie?!
What is a calorie?
Answers:
A calorie is a unit of measurement for energy.
The word "Calorie" is often mis-used to mean "energy", for example people speak of "high-calorie foods" when they mean foods high in energy.
Definitions for calorie fall into 2 classes:
* The small calorie or gram calorie approximates the energy needed to increase the temperature of 1 gram of water by 1 °C. This is about 4.184 Joules, and exactly 0.001 large calories.
* The large calorie or kilogram calorie approximates the energy needed to increase the temperature of 1 kg of water by 1 °C. This is about 4.184 kJ, and exactly 1000 small calories.
Source(s):
http://en.wikipedia.org/wiki/calorie...
Heres the definition:
Abbr. cal Any of several approximately equal units of heat, each measured as the quantity of heat required to raise the temperature of 1 gram of water by 1°C from a standard initial temperature, especially from 3.98°C, 14.5°C, or 19.5°C, at 1 atmosphere pressure. Also called gram calorie , small calorie .
Abbr. cal The unit of heat equal to 1/100 the quantity of heat required to raise the temperature of 1 gram of water from 0 to 100°C at 1 atmosphere pressure. Also called mean calorie .
Abbr. Cal The unit of heat equal to the amount of heat required to raise the temperature of 1 kilogram of water by 1°C at 1 atmosphere pressure. Also called kilocalorie , kilogram calorie , large calorie .
A unit of energy-producing potential equal to this amount of heat that is contained in food and released upon oxidation by the body. Also called nutritionist's calorie .