caffeine: a mild stimulant that is an alkaloid in coffee, tea, and cola.
calorie: a unit of heat measurement (the kilocalorie, or 1000 calories is used in nutrition).
caproic acid: a saturated fatty acid with a unpleasant odor.
carbonate: a salt or ester of carbonic acid.
carcinogen: a cancer-causing agent.
carotenes: orange fat-soluble pigments.
catalyst: a substance the changes the rate of a reaction without being used up in the reaction.
cholesterol: a fatlike substance that is needed by cells; can result in artery blockage if built up.
coagulation: the formation of clots from the denaturation of protein.
collagen: connective tissue found in muscles.
complex carbohydrates: a carbohydrate composed of many small sugar units attached.
corn syrup: syrup made from the partial hydrolysis of corn starch.