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.
Starch is the most important carbohydrate in the human diet. Non-starch polysaccharides are also known as dietary fibre. There are two kinds of non-starch polysaccharides insoluble and soluble. The majority of foods contain both types although proportions very. Insoluble non-starch polysaccharides includes: wheat, corn, rice.
Glycerol has some useful properties. It is a solvent and a solute (it can dissolve and be dissolved). When mixed with water, it lowers the freezing point and can then be used as a lubricant. It has a boiling point of 290°C and a melting point of 17.8°C (14). Glycerol is colourless and thick (11) so in comparison to
However, the difference is the role in which it plays during the reaction since in wintergreen it is substituted as the carboxylic acid but in order to produce aspirin it is used as the alcohol. The substance which is common in both aspirin and wintergreen is the salicylic acid. 6. Fats and oils consist of any form of acid. However, the alcohol remains fairly constant in the form of glycerol or in other words propane -1,2,3- triol.
These product raise the level of bad cholesterol or LDL (low density lipoproteins. Unsaturated fatty acids however, are mainly found in fish and plant foods like canola oil, olive oil, peanut oil, tuna, salmon, mackerel and trout. These molecules are liquid at room level. The bonds are double in this form. These
Isolation of Trimyristin from Nutmeg and Its Hydrolysis to Myristic Acid Compounds having complex molecular structures can be separated from natural materials. Usually they are components of very complex mixtures. To obtain pure compounds, long, tedious separation and purification procedures are often required. The triester, trimyristin, is however an exception and can be extracted from ground nutmeg seeds with tert-butyl methyl ether. Crystallization from acetone yields the pure compound.
Guinea pigs will eat a wide range of foods, including much of what we ourselves eat. Being herbivores, guinea pigs shouldn't be given leftovers containing meat, but most vegetables will be taken readily. It is possible to buy pellets which are manufactured from a range of vegetable products, plus vitamins and minerals. Hay: Clean fresh hay should be available at all times, not only as bedding but also as a substantial part of the diet. Hay is, in fact, quite nutritious and contains most of the basic constituents required in the diet.
Sweetness perception is the ability to taste sweetness. An enzyme is a protein that speeds up a chemical reaction in a living organism. Amylase is a digestive enzyme produced largely by the pancreas and salivary glands that converts starches to sugars. Starch is a white, tasteless, solid carbohydrate occurring in the form of minute granules in the seeds, tubers, and other parts of plants, and forming an important constituent of rice, corn, wheat, beans, potatoes, and many other vegetable foods. Iodine is a nonmetallic halogen element obtained usually as heavy
(3 points) 7. Define the following terms: simple diffusion, filtration, and osmosis (3 points) 8. How can the concentration of water in a solution be decreased? (3 points) 9. Assume the left beaker contains 4 mM NaCl, 9 mM glucose, and 10 mM albumin.
Maize our main character can otherwise be known as Corn. How has a once humble grass come to dominate the entirety of the globe? A food that can wear many hats corn is so versatile that it can literally “pop” out of its husk onto other roles. Corn can do so many things. We use it to make many types of sweeteners, it can produce oil, along with processed foods and animal-derived foods.