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The term, "Calorie" goes back to 1824, when it was used as a measure of energy. Since then, it's been replaced in most scientific usage with the joule. However, in Nutrition, it lives on -- kinda. Let me explain:
The original "calorie" (note the lower-case "c") was roughly the amount of energy required to raise the temperature of 1 gram of water by 1 degree C. For Nutrition, this is a tiny amount of energy -- so small it's nearly useless. So when people talked energy and Nutrition, they started using the Calorie (note the upper-case "C"), which was meant to refer to the amount of energy required to raise 1 kilogram of water by 1C degree. This is known as a Large Calorie, a Calorie, or a kilocalorie (note the lower case "c" in "kilocalorie) or Kcal.
So 1 Calorie = 1 Kcal = 1,000 calories.
Kcal or "kilocalorie" is usually what people actually refer to when they talk about calories.
In theory, a Kcal is also known as a Calorie (capital C)
1 Kcal = 1 Calorie = 1,000 calories
In practice however people only ever use Kcal so when you see something like 10g of butter = 70 calories, it SHOULD be 70 Calories or 70Kcal - but if you just work on the basis that anytime you see a calorie on a diet sheet or website, they all talk about the same thing.
It makes life easier, instead of saying a man needs 2,000,000 calories a day and 10g of butter contains 70,000 calories, we just scale back by 1,000.
REMEMBER that energy is neither created or destroyed but changed from one form to another. Kinetic energy (known as the energy during a motion) is the result of potential energy (stored energy by different means, by mechanical means or due to gravity). Joules is the unit of measuring the packet of energy, and kilojoules is just a bigger unit. 100J is 0.1kJ.
Some Expressions to measure energy.
Ek = 1/2mv2
EP = mgh unit is joules for both, k= kinetic, p= potential
One cup of kidney beans contains 15g of protein, 1g of fat and 42g of carbohydrate. How many kilocalories does this sample contain?
Use this equation: calories (calth) x 0.004184 = kilojoules (kJ)
Kilocalories are the same as the Calorie (capital C) amount you see on a label. It is 1000 times a calorie (lower case c).
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How many calories are 2341.0 kilocalories?
There are 2341000 calories in 2341.0 kilocalories There are 2341000 calories in 2341.0 kilocalories There are 2341000 calories in 2341.0 kilocalories
How many kilocalories is provided by 10 grams of pure alcohol?
Alcohol provides 7 kilocalories per gram, so 10 grams of pure alcohol would provide 70 kilocalories.
How many kilocalories are in one gram of alcohol?
There are 7 kilocalories in one gram of alcohol.
How many calories in a Btu?
1 BTU=0.252164401 kilocalories 1 BTU=0.252164401 kilocalories
10 kilocalories is equivalent to how many calories?
This can be very confusing. 10 kilocalories is the same as 10,000 Calories.
How many kilocalories are in 540 calories?
A kilocalorie is 1000 calories, so 540 calories is 0.054 kilocalories.
How do you abbreviate kilocalories?
KCal
What does kc mean?
kilocalories
The number of kilocalories in a food indicates the amount of what?
The number of kilocalories in a food indicates the amount of energy in the foods you eat.
What does the number of kilocalories in a food indicate the amount of?
The number of kilocalories in a food indicates the amount of energy in the foods you eat.
How many kilocalories are needes to heat form 62F to 105F?
To calculate the number of kilocalories required to heat something up, you need to know the specific heat capacity of the substance. The specific heat capacity of water is 1 calorie/gramΒ°C. The formula to calculate the heat energy required is Q = mcΞT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity, and ΞT is the change in temperature.
How many kilo-calories does fat have per gram?
Fat has 9 kilocalories per gram. Carbohydrates and protein both have 4 kilocalories per gram, and alcohol has 7 kilocalories per gram.
