1.04 Chemistry Lab

All standardizations are performed in triplicate. Weigh out .1000-.1200 gram KIO3. Add 70-80 mL of deionized water. Swirl and dissolve. Add 3 mL of 6M HCl. Swirl and mix. Quickly titrated the brow-red solution with 0.1M Na2S2O3 until it is light yellow. Then add 3.5 mL of starch indicator. Titrate again until the dark color first disappears.

6-3: This process is used by cells to manufacture _biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products__

The main objective of this experiment is to differentiate between a physical change and a chemical change.

pH was recorded every time 1.00 mL of NaOH was added to beaker. When the amount of NaOH added to the beaker was about 5.00 mL away from the expected end point, NaOH was added very slowly. Approximately 0.20 mL of NaOH was added until the pH made a jump. The pH was recorded until it reached ~12. This was repeated two more times. The pKa of each trial are determined using the graphs made on excel.

The proof (twice the % alcohol) starts at its maximum and goes down (as the alcohol evaporates). If we start with a high concentration of alcohol, we will get the azeotrope (95% alcohol, 5% water) for a while, then the concentration will decrease.

1. Place a small amount of wax from a birthday candle into a test tube. Heat gently over a burner flame until the wax melts completely; then allow

Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products.

The main objective is not only to reach the optimum ratio to generate the greatest amount of heat and temperature, but also to maintain a constant volume throughout the entire experiment.

Solvent – A solvent is the liquid that dissolves the solute to create the solution.

1. Temperature: high temperature accelerate oxidation, reduction and hydrolysis reaction which lead to drug degradation

After a harsh Wednesday due to Chemistry Lab and Organic Chemistry, I enjoy sitting in the patio area of Cafe 1919 and enjoy a Panini along with a Caprese salad. Both the main dish and side contain a fruit I once hated as a child. Tomato have always been the part of the burger I threw out, the part of the salad I did not touch, the part I could never swallow. Even throughout high school, I always hated tomatoes, but ever since I got to UCLA my love for this fruit exponentially grew out of nowhere. One day as I was enjoying my usual Wednesday lunch, I wonder what gave these little morsels such a juicy taste. Perhaps UCLA does but the best fruit and vegetables for their students, perhaps the oil the tomatoes bathe in give it its rich taste, or perhaps we have those hidden GMO, gentically modified organisms, that people argue over its stability. I search if there is any known gentically altered tomatoes and the search engine directed me to links that talk about a product known as the Flavr Savr. Interesting enough the product known as the Flavr Savr, which is a gentically altered tomato is actually the first FDA approved GMO to hit to the market. After discovering the first ever GMO my curious mind started asking questions that I needed to know. I wonder what exactly is the Flavr Sav? When was it created? Who created it and how? Was there a reason they chose to mess with the DNA of a tomato? How did people response to the first of many gentically altered food? Is the Flavr

The hot apparatus should be placed on a glazed tile or wire gauze and not be placed on working table directly.

    Quality control is an important aspect of science and impacts life for average Americans daily. Just about every manufacturing facility used quality control, including medicine, food, and cosmetics. Quality control is used to determine if a product, like food contain what they say they do. For example, a company claiming to make healthy food may understate the amount of high fructose corn syrup (sugar), but if quality control happens then the contents will be revealed accurately.

1. Christian, G.D. (2003). Analytical Chemistry, 6th edition. New York: John Wiley & Sons. 2. Harvey, D. (2000). Modern Analytical Chemistry. New York: McGraw Hill Book Co. 3. Kellner, R., Mermet, J.M., Otto, M.,Valcarel, M. and Widmer, H.M (Editors). (2004). Analytical

Overall, the experiment succeeded that the metals show the theoretical properties. Differences existed in the mathematical calculation of the actual length. These differences, however, it can be accounted for by experimental error; more over there are uncertainty on purity of the