Food Essay

274 WordsDec 27, 20132 Pages
(READ) Vocabulary: Dehydration Synthesis Vocabulary • Carbohydrate – an organic molecule made up of carbon, hydrogen, and oxygen. o Carbohydrates are the main energy source for most types of cells. o Carbohydrates are initially formed by plants through the processes of photosynthesis and dehydration synthesis. o Foods rich in carbohydrates include grains, fruits, and sugars. • Chemical formula – a symbolic representation of an element or compound. o Chemical formulas use subscripts and parentheses to denote the number of atoms in a molecule of the substance. o Examples of chemical formulas include NaCl (table salt), H2O (water), and Ca(OH)2 (calcium hydroxide). • Dehydration synthesis – a chemical reaction in which two or more molecules bond by losing one or more water molecules. o Plants build starches through dehydration synthesis. • Disaccharide – a carbohydrate made of two monosaccharides. o Examples of disaccharides include maltose (two glucose molecules) and sucrose (one glucose molecule and one fructose molecule). • Glucose – a monosaccharide with the chemical formula C6H12O6. o Glucose is the primary molecule used during cellular respiration reactions. • Hydrolysis – a chemical reaction in which the interaction of water and a compound result in the breaking up of that compound. o Your digestive system breaks down starches through hydrolysis. • Monosaccharide – the simplest type of carbohydrate. o Examples of monosaccharides include glucose and fructose. • Polysaccharide – a carbohydrate made of three or more monosaccharides. o Examples of polysaccharides include starch and cellulose. • Valence – the number of chemical bonds an element is capable of

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