Carbohydrates
Carbohydrates are molecules that contain Carbon, Hydrogen, and Oxygen. The most basic sugar- carbohydrate is the monosaccharide. Carbohydrate molecules are categorized by the number of carbons present in the molecule. Glucose, the most common monosaccharide has six carbons per molecule, which is called a hexose. Carbohydrates also have a 2:1 hydrogen to oxygen ratio. This aids in the condensation and hydrolysis reactions. A condensation reaction occurs when two monosaccharides join by the removal of H2O. During condensation synthesis one monosaccharide losses an OH and the other losses a H. As a result the two monosaccharides bond by forming maltose a disaccharide with a by-product of a free H2O. When three or more monosaccharides or monomer are involved in a condensation synthesis a polymer or polysaccharide is formed with a by product of water. Starch and Glycogen are two common chain polymers.Just as the removal of water joins carbohydrates together via condensation synthesis, hydrolysis is the reaction using water to break apart Di and polysaccharide. A Di-saccharide is bound by sharing an oxygen with one hydrogen on each opposing side. When H2O is re-introduced via hydrolysis the two mono
In this experiment we will test 2 solutions and 2 substances for the presence of starch. Iodine will be the independent variable. Our dependent variable will be water, starch suspension, potato piece, and onion piece. Tube 2 1cm starch suspension+ 5 drops Iodine Color change due to presence of starch Purple+black color Tube 4 4 drops potato juice+ fill to 1cm mark water +Fill to 3cm mark Benidict's reagent. Boil 5-10 min. Color change due to sugars. Green+blue Tube 5 1cm starch suspension+ Fill to 3cm mark Benidict's reagent. Boil 5-10 min. No color change All experiments where subject to the same types of errors. These errors could have been any variation of experimental procedures, chemicals, or data.
Some common words found in the essay are:
Conclusion Tube, Test Sugars, Starch Polysaccharide, Pos-sugars Tube, Hydrogen Oxygen, Starch Glycogen, Iodine Color, RESULTS Tube, HCL HCL, Reaction Negative, color change, benidict's reagent, negative control, color change due, change due, benidict's reagent boil, presence starch, reagent boil, tube 2, boil 5-10, 5-10 min, boil 5-10 min, reagent boil 5-10, 30 min add, tube 1,
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Approximate Pages = 5 (250 words per page double spaced)
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