If you need a second page, staple them together with your name on each. 1. Which two major plant crops are incorporated into the vast majority of Genetically Modified Foods? Briefly describe how it is that these ingredients are in just about all processed foods. Corn and soy.
How Sweet It Is! Determining Percent Sugar ANONYMOUS Chemistry 6th Due: 3/21/12 Introduction Background Information Sugar is an import compound that is used by all complex living organisms. There are many types of sugar including glucose, fructose, and lactose. However, the type of sugar that is tested for in this lab is the common sugar used while cooking. This sugar is called sucrose.
This was confirmed by the lab manual in page 30 which contains the list of the different Rf values by decreasing value. Introduction: Chemist use many ways of separating and determine want components are in different materials. One of this ways is by dissolving the material in solvent this will only get the mixture of components for example the spinach had to be grind up with hexane to get the organic material separated from the pigments that will be separated even further. Next using a solvent and a polar compound like alumina, the pigments separated from the organic material could be run in a column in which those will be separated even more using polarity. As a more polar solvent is use to push the different rings of pigment, these are collected in their own test tubes to then be run in a TLC which will determine the polarity using the Rf values and then comparing them to the table in the organic lab manual ones.
Allow the dough to cool and then add in your food coloring. Jell-O Play dough (Nonedible) • 1 cup flour • ½ cup salt • 2 tsp cream of
With iodine it changes to a brown color and becomes clumpy. Using the mystery powder key, experimental results were compared to know results of baking soda,baking powder,cornstarch and powdered sugar. Chemical changes were made when a substance fizzes up or changes color. When a substance fizzed up into bubbles, it indicated a reactivity of solubility and a chemical change. Physical changes were indicated when a substance only reacted once.
Magic marker inks are often mixtures of several compounds. Paper chromatography is a common method of separating various components of a mixture. After separation, you can observe the different colors that make up a particular color of magic marker ink. You can also calculate a ratio Rf, which compares how far each compound traveled to how far each solvent (substance that dissolves another substance) traveled during the experiment. Rf = Ds/Df Ds = Distance traveled by the compound Df = Distance traveled by the solvent Materials: coffee filter, tape, isopropyl alcohol (rubbing alcohol), water, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking glasses; metric ruler, 3 pencils Pre-lab Questions: List one extensive and one intensive property of marker ink.
Experiment Chromatography Of Food Dyes Abstract This experiment is to determine the presence of a mixture in a substance. Chromatography is used to separate substance in a mixture or separating components from a mixture. Using chromatography with a solvent we are able to separate the different mixtures found in a substance. Chromatography can tell if a sample is pure or if it is made up of several different substances. Experiment & Observation I gathered together my items; distilled water, salt, ruler, scissors, stapler pencil, tape, 16 toothpicks, Kool-Aid drink mix strawberry and grape, set of McCormick food coloring red, yellow, green and blue, small bag of M&M candy, plastic beaker 50 mL, petri dish 60mm, well-plate 24, FDC blue dye #1 0.5 mL vial, FDC blue dye #2 0.5 mL vial FDC red dye #3 0.5 mL vial, FDC red dye #40 0.5 mL vial, FDC yellow dye #5 0.5 mL vial, FDC yellow dye #6 0.5 mL vial, unknown 0.5 mL vial, 3 filter paper chrom 14x7 cm.
Purpose: The purpose of this experiment is to determine the quantities of the impurities of the baking soda produced by the Athenium Baking Soda Company and also identify the salts present in the baking soda sample. Introduction: NaHCO3, sodium bicarbonate or even sodium hydrogen carbonate, are many different names for a common item, baking soda. Baking soda are has many different uses, most of them involving cleaning household items. It does have other uses such as a hygiene product. There are several different ways to create baking soda, but the Athenium Baking Soda Company chose to make baking soda by reacting ammonium hydrogen carbonate with a highly concentrated aqueous solution of NaCl or brine.
If a substance contains proteins then when Biuret reagent is added the substance will change Easter egg colors (lavender, yellow, and green). Materials: 8 test tubes Test tube rack Test tube holder Glass stirring rod Sharpie marker Hot water bath Iodine solution Brown paper bag Biuret Reagent Benedicts solution 20 ml each: 1. Honey solution 2. Egg white and water solution 3. Gelatin and water solution 4.
Even though popular demand for corn is dated back to the Mayan era, Pollan answers this question when he states, “A great many of the health and environmental problems created by our food system owe to our oversimplify nature’s complexities, at both the growing and eating ends of our food chain” (6). Through scientific studies we have found ways in which we can manipulate corn into becoming a byproduct or base for practically anything. This then means that when its molecules are broken down, additives are created, such as fructose corn syrup, and it is then infused into food, and drinks. This is what he means by the eating end of the spectrum. As for the growing end of the spectrum, Pollan then goes on to say that “It (corn) had to adapt itself not just to humans but to their machines” (30).