lab is to determine the pH level of common household products. Introduction Liquids are either acidic‚ basic‚ or neutral. We are able to figure out which one it is based on properties‚ along with the pH. Acids taste sour‚ and bases taste bitter. Using the pH scale‚ you are able to know how strong of an acid or base a liquid is. High concentration of [H+] ions means that the liquid has a low pH. Therefore a liquid with a low concentration of [H+] would have a high pH. A pH of less than 7 represents
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For this experiment‚ there will be an optimal point for each factor. I believe that the optimal temperature for the enzyme sucrase will be 37°C because that is the point where the temperature increases the rate of reaction to its greatest point without denaturing it. For the pH test‚ I think that the optimal pH for sucrase will be the pH of 7 because it is neutral so it won’t affect the charge in a negative or positive way. For the denaturation test‚ I think that the optimal treatment for the enzyme
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Title: pH and buffer solutions Aim This experiment was carried out to determine the role of buffer solution and the factor which affect the buffer capacity. Besides‚ this experiment was carried out to investigate the solubility of protein casein over a range of pH concentration. This experiment also was carried out to determine the isoelectric point of the casein and the effect of the isoelectric point toward the casein solution. Methods Verification of the Henderson-Hasselbalch equation
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Human Digestion Activity The digestive process involves the mixing of food‚ the movement of food through the digestive tract‚ and a chemical breakdown of large molecules of food into smaller molecules. The digestive system is made up of the digestive tract and other organs that aid in digestion. The digestive tract is a series of hollow organs joined in a long‚ twisting tube from the mouth to the anus. Those twisted tubes include the mouth‚ esophagus‚ stomach‚ small and
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Department of agriculture- digestive system of a cow‚ koala and dingo Digestion comparison Koala The Koala is the only mammal‚ other than the Greater Glider and Ringtail Possum‚ which can survive on a diet of eucalyptus leaves. Gum leaves contain only about 50% water‚ very little nitrogen‚ large amounts of fibre and potentially toxic oils. Koalas are found to have molars premolars to physically break down the food. Plants contain cellulose‚ which can only be broken down to release cell contents
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Property of Starch The experiment obtained Starch to have a bulk density of 0.48g/ml‚ i.e. 0.48g of Starch occupies 1ml of water. This value represented the density of starch incorporating the voids. The tapped density was found to be 0.60g/ml. This value represented the density of starch excluding the voids and intra- particle pores greater than molecular and atomic dimensions in the crystal lattice. This simple means‚ by reducing the number of intermolecular spaces between the starch particles‚
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IODIMETRIC AND IODOMETRIC METHOD SUBSTANCE TO BE ASSAY AQUEOUS/NON-AQUEOUS ALKALINITY / ACIDIMETRY DIRECT/RESIDUAL TITRATION TITRANT INDICATOR CHEMICAL REACTION Assay of Antimony potassium tartrate Direct titration 0.1 N Iodine Starch TS KOOCCHOHCHOHCOO (SbO) + I2 + H2O KOOCCHOHCHOHCOO (SbO2) + 2HI + 2HI + 2NaHCO3 2NaI + 2H2O +
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Result Starch suspension When the yellowish-brown iodine was added into the starch suspension‚ the starch suspension was changed into dark blue. Potato slide Discussion Starch suspension When the yellowish-brown iodine was added into the starch suspension‚ the starch suspension was changed into dark blue. This is due to the yellowish-brown iodine changed into dark blue when there is a presence of starch. This shows a positive test for starch. Potato slide
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Temperature and Thermometers The Temperature of an object is a measure of the hotness or coldness of that object. An alternative way to think of temperature is to say that “the temperature of an object is a number – on some manmade scale – that indicates the hotness of the object”. ‘Hotness’ in turn is a measure of the kinetic energy of the molecules of the material. Note: You must use the term ‘hotness’.* The SI unit of temperature is the Kelvin (K)* Relationship between degrees Celsius
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The Effect of Increasing Temperatures on the Enzyme Catalase Enzymes are proteins that help speed up chemical reactions inside your body and without enzymes‚ chemicals reactions in cells would be incredibly slow to a point where no activity at all takes place (Brawo press Inc‚ 2017). Enzymes speed up the chemical reactions by lowering the activations energy and they do this by binding substrates together in the correct orientation to react (Ernest Z‚ 2014). They are vital for life and serve a
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