SCHOOL OF INDUSTRIAL TECHNOLOGY IMG 103/3: FOOD CHEMISTRY LABORATORY REPORT TITLE : MEASURING pH LEVELS AND WATER ACTIVITY OF FOODS NAME: MATRIC NO: GROUP: 2 DATE OF EXPERIMENTAL WORK: 13 MARCH 2013 DATE OF SUBMISSION: 20 MARCH 2013 TITLE: MEASURING pH LEVELS AND WATER ACTIVITY OF FOODS ACTIVITY 1 Introduction : This experiment was performed to investigate the pH levels of different types of food products. The pH of a solution can be determined experimentally in several ways
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To investigate the results of the different amounts of sodium bicarbonate (2g‚4‚8g)‚when put in the baking process to produce cupcakes‚obtained by the change of height of a cupcake measured by a ruler‚when baked at 180 degrees celsius for 20 minutes when measured with a ruler. Research question: What will be the result of adding different amounts sodium bicarbonate (2g‚4g‚8g) in a standard (vanilla) cupcake ‚when they are baked at 180 degrees celsius over a period of 20 minutes using an oven thermometer
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• • • • • • • • • • • 2 one-ounce medicine cups Safety goggles Plastic spoon (reuse) Basket-type coffee filter 2 9-once clear (reusable) plastic cups 3-quart package of powdered non-fat milk 1 ½ cups vinegar 8 ounce box of baking soda set of measuring spoons Measuring cup Hot water (1/3 – ½ cup) Plastic or newspaper (to cover table if necessary) Paper for gluing Towels for cleanup Levels Middle School (Use as a demonstration for elementary school) Vocabulary
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vinegar‚ hydrogen peroxide‚ and oil was tested to identify the physical and chemical properties of these liquids. Acetone usually used as nail polish remover dissolves plastic. Vinegar used in cooking and as a condiment begins to fizz when mixed with baking soda. Hydrogen peroxide usually used as a disinfectant reacts to iodine solution and starts to bubble. Oil is used to keep food from sticking to non food surfaces and
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Objective: The main objective is to demonstrate the law of Conservation of Mass. Use Vinegar and baking soda to demonstrate the law of Conservation of Mass. Introduction: The law of Conservation of Mass states that mass is neither created nor destroyed during ordinary chemical reactions or physical changes‚ which means that no matter how dramatic of a change that a substance goes through‚ it will not lose mass. It may seem like it lost mass‚ and usually‚ if you weighed the result‚ it will have
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Signature:___________________ Introduction- Baking soda and vinegar are two common materials found in almost every household. That‚ plus the fact that all the starting and finishing materials are non hazardous and safe‚ is why this is one of the first chemical reactions that many people are exposed to The purpose of this experiment tests which of the two reactants (vinegar and baking soda) is the limited reactants. It is hypothesized that the limited reactant of this experiment is the baking soda. Materials- * 2
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-10 mL graduated cylinder -Test-tube racks -8 to 16 test tubes -Test tube holder -Medicine dropper -Rubber stoppers -Test-tube brush -Wax pencil -Distilled water -Depression spot plate -Baking soda solution‚5% -Glucose solution‚ 5% -Known foods; glucose‚ corn starch -Cornstarch suspension‚5% -Detergent solution -Unknown food samples -Benedict’s reagent -Lugol’s solution -Sudan IV indicator -Unglazed brown paper
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For the firsts three sets of titration trials of baking soda powder was used. About 0.3 grams of baking soda powder were measured and mixed with 20mL of deionized water in a beaker. Three drops of the indicator bromothymol blue were put in the baking soda solution and mixed well. A burette and funnel were rinsed off using water and cleaned well. The burette and funnel were rinsed a second time using
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Chocolate Chip Cookies: A highly scientific chemical reaction of butter‚ sugar‚ eggs‚ vanilla‚ flour‚ baking soda‚ salt‚ and‚ of course‚ chocolate chips. The buttery‚ toffee notes of a perfect CCC is often considered the epitome of home baking‚ a simple yet reminiscing experience‚ taking many down a trip on memory lane. However‚ the classic chocolate chip recipe isn’t as “cookie cutter” as the back of the Nestle Morsel bag has you believe; there is actually a plethora of chemical reactions that take
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to the baking soda‚ the reaction let out a smell and it started bubbling and gas came out. The reaction also rose‚ and changed its color 2. Evaluating Conclusions. Was the law of conservation of mass really violated in Part 1 as it appeared? Explain your answer. Yes‚ the law of conservation of mass was violated in Part 1 because the experiment was not conducted like Part 2 which was sealed. The experiment was held in the open which allowed the mass to decrease when the baking soda and the
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