The specific heat capacity is the amount of heat energy needed to raise 1 kg of a substance by 1 °C. Q. So the specific heat capacity of water is 4.184kJ (given that 1 Cal (large calorie aka the kg calorie aka the food calorie) is required to do the same, ie, raise the temperature of 1 kg of water by 1 degree C and 1 Cal is equivalent to 4.184kJ? Q. 1 cal (small calorie aka gramme calorie) is the amount of heat energy required to raise the temperature of 1g of water by 1 degree C, yes? 1 cal = 4.184J. Q. 1 Cal = 1000 cal? 1 Cal = 1kcal?