Powder B, when water was added, it only became watery. When vinegar was added, the liquid sunk to the bottom and none of the outcomes changed. With iodine, it had a color change with some bubbles but shortly after it went back and stayed the color brown. Powder C, it was not affected by water but by vinegar, it changes into bubbles and fizzes up and has a chemical reaction. With iodine it changes to a brown color and becomes clumpy.
By the time the egg is done you will see egg yolk sloshing around as you shake it (rub the egg gently to see the yolk but don’t rub too hard or it will pop). After looking at the yolk the egg will bounce a little. As I placed the egg in the cup filled with vinegar, there was no change. Within the first twenty-four hours the vinegar created tiny bubbles on the egg. Then, the eggshell started to soften.
The oil later added simply stayed in the middle between the liquid and the suds at the top. Analysis: 1. The substance MSG is water soluble, it completely dissolved when added to water, but was not soluble in alcohol. 2. Vegetable oil is hydrophobic and there for is not water soluble but alcohol on the other hand is completely soluble with vegetable oil.
If the ability to perceive sweetness is stronger, then the salivary amylase activity will be greater, indicated by a lighter color change in the starch and iodine solution. For this experiment, we first gently chewed a saltine for three minutes, rating our sweetness perception from 0-5 on a chart at each sixty-second interval (0 least sweet; 5 sweetest). We then classified the class into three categories: non-tasters (1-2), moderate tasters (3), and tasters (4-5). We recorded the data. Next, we put starch solution and a couple drops of iodine into a reaction tube, and recorded the color.
UNIT 7 PROJECT Part 1 NERVE DENSITY ASSESSMENT LIPS | 7 | 9 | TICKLED | SHIVERED | PALM | 3 | 1 | ROUGH | NOTHING | BOTTOM OF FOOT | 2 | 6 | WEIRD | TICKLED | ELBOW | 4 | 0 | ITCH | BARLYTHERE | KNEECAP | 5 | 6 | SANDPAPER | GENTLNESS | STOMACH | 4 | 6 | SOOTHING | SQUIRMING | BACK OF HAND | 4 | 2 | ITCH | NOTHING | Body part of your choice # 1: lips Body part of your choice # 2: Stomach What trends do you notice in the data you have collected here? I seemed to feel more with the hair brush. Which body parts in your list have the two highest nerve densities? The two body parts with the highest nerve densities are the lips and the kneecap. Which have the two lowest?
In Part I the reaction you observed was Mg(OH)2 (s) ↔ Mg2+ (aq) + 2 OH- (aq). Compare the colors you observed in the experiment and answer these questions: Which way should the equilibrium shift when HCl is added? How do your results support your answer? It should shift toward the reactants. It is shown by removing the pink color from the product.
Temperature slightly got higher but maintained in the end. 3. Constant stirring and put 6.0 mL bleach solution ( one drop at a time) for about 30 minutes, put from top of air condenser. Bleach was added slowly and nothing appeared. 4.
The substance dissolves in water but not in alcohol, is transparent when dissolved in water, is electrically conductive when dissolved in water, dries white, and has a high melting point. Out of the four compounds we received to test, according to the data we collected, sodium carbonate was the one that would work the best as a fixative for the glaze. In the experiment we conducted you will notice that the independent variables were the different compounds, while the dependent variables were the results to the criteria that had to be met. Also, during our research, we found that sodium chloride and sodium carbonate worked better than sucrose and salicylic acid because they have ionic bonds. These conditions are more suitable for ionic bonds.
The experimental group will receive the Protazen and the control group will receive a placebo. A placebo is an inert substance and it is used in order to find out whether or not the effect of the independent variable actually includes what the experimenter is testing. In this experiment the placebo will be a sugar pill. Each experiment has a control in order to account for the placebo effect. The placebo effect suggests that the effects produced by a drug might be related to psychological processes as a test subject may still improve because of their expectation to do so.
This particular test had a total of one-hundred and forty-six questions. The test was not hard to do, but towards the end I began to get a little antsy due to the fact that test taking process seemed to slow down and take more time. This was probably due the fact that I was beginning to get tired and sleepy. Taking the test at an earlier time would have probably been a better choice. The test was graded on a scale of 0 to 100.