It binds with starch so the more starch, the darker the solution was. We also used a blank solution with no starch to set the spectrometer to zero. The spectrometer was used to compare the absorbency of the starch in the control solutions and the non-control solutions over time. Amylase was the last solution added to start the initial breakdown of the starch. Adding it at one minute intervals allowed the students to see how much starch the amylase was actually breaking down over time.
Roll the dough out until it is a quart of an inch thick and then use your preferred cutter to shape the dough into cookies. 5. Place then on a trey and cook them in an oven at 350 degrees for 10 minutes. (Transition: While the cookies are baking it is a good time to start making the frosting.) III.
The trend was a slight decline from the baseline measurement of 99.0 mg/dl to the two-hour measurement of 89.4 mg/dl. There was a larger drop in blood glucose at 90 minutes, but the overall trend was a slight decrease in blood glucose from initial to final measurements.
Now it’s time to do the mixing!! Gather all of your ingredients for the crust and a large mixing bowl. The first step is to add 2 cups of sifted flour into the large mixing bowl along with 1 cup butter flavored shortening. Then use a pastry cutter or dough hooks to mix well, once all the ingredients are combined and resemble crumbs add the 1/3 cup of ice water use the folding method to combine, and lastly form a ball. Warp the dough ball with plastic wrap or whatever you may have set in the refrigerator for no less than 40 minutes.
How many moles of zinc are in a penny? Purpose: This lab is being performed so students can visualize a single-replacement reaction and calculate how much zinc is in a post-1982 penny. Materials: A post- 1982 penny steel wool 3 M HCl graduated cylinder small beaker tongs balance paper towels sharp edge Safety: 3 M hydrochloric acid (HCl) is fairly caustic. Wash hands immediately if you spill on them. Wear goggles.
METHODS/MATERIALS 3 Lifesavers 3 50ml cylinders Salt Water Baking soda 80 ml of water to each substance 20 ml water 20 ml salt 20 ml baking soda Timer 1 hour We took 3 50 ml cylinders, label them salt, water, and baking soda. We added 20 ml of salt, water, and baking soda inside the 3 cylinders. Then we mixed 80 ml room temperature water in all 3 substance. Also, we set a timer for 1hour to record the result. RESULTS After mixing the 3 lifesavers in each of the substance, the lifesavers fell to the bottom of the cylinder.
KPD. They were then given another task to do to stop them rehearsing the trigram. Their recollect was tested after 3,6,9,12,15,18 seconds and the recall had to be in correct order to count. They discovered that 80% of participants recalled the trigrams very well after 3 seconds, but this dropped dramatically to 10 % after 18 seconds. The supporting evidence for the duration of LTM was brought about by Ebbinghaus who tested his memory using nonsense syllables after delays ranging from 20 minutes to 31 days later and found that a large proportion of the information in LTM was lost comparatively quickly, i.e.
About 3mL of the wash water is collected in a small test tube. A few drops of 0.1M silver nitrate solution is added to the water to test for the presences of Cl- ions. Lastly the filter paper was placed in the dry oven to dry completely and then weighted. Calculations and observations were made and recorded. Observations The
Objective : Does the temperature of the water increased or decreased as the dry ice is added every 30 seconds, until 300 seconds? What reaction will it be? (Endothermic or Exothermic Reaction) Hypothesis : The temperature of the water will decreased as the dry ice is added every 30 seconds. Also, the reaction will be endothermic reaction. Reaction : CO2+H2O → H2CO3 Technique : I will prepare a bowl that can fit 1000cc water.
We then shook the jar until it was well mixed and waited about thirty minutes for the mixture to settle. Once it settled we measured the thickness of each layer of the soil. In the water holding experiment we simply filled a beaker with 100 ml. with garden soil then poured water into the beaker to saturate the soil enough so that there was no air trapped in the dirt. We measured the amount of water we used and calculated the pore space as well as the percentage of pore space.