Question

what are calories.............?

Answer 1

1 Calorie is the energy needed to raise the temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods.

Answer 2

Answer:

Calorie is such an energy to do a work which is never destroyed but after mixing with oxygen it turns into heat , it means that is the length of an object is measured in metre and its weight in Kilogram per gram in the same way the energy or heat received from food substances is measured in calories .