Rock Candy Hypothesis

The hands were washed. Goggles were placed on the eyes for extra protection. A petri dish containing nine pill bugs were obtained and set aside for later use. Two water bottles’ ends were cut and taped to each other creating a miniature tunnel for the pill bugs to crawl in. 50 mL of tap water was obtained in a small beaker and then was slowly moved into the lid of the bottle using a funnel. The sugar used in this experiment was created by mixing ten milliliters of starch,glucose, and regular countertop sugar. This was transferred into the joint water bottle tunnel using a funnel. Both ends of the tunnel were sealed shut and each measurements were taken every three minutes and final measurements were taken after 21 minutes. The results were

The purpose of this lab was to explore and understand the scientific method and how to apply it to experimental procedures, as well as developing an understanding the importance of complete and concise presentation of experimental results obtained by statistical data analysis from collected raw findings. These learning objectives were accomplished by testing the emergence times of sponge creatures from their gelatin capsules by asking the question, “How does water temperature effect the time in which the sponge creatures materialize from their casing?”. An experiment was designed to test this using two different water temperatures and twenty four sponge gelatin capsules (1).

LABORATORY REPORT Activity: Enzyme Activity Name: Natalie Banc Instructor: Elizabeth Kraske Date: 09.22.2016 Predictions 1. Sucrase will have the greatest activity at pH 6 2. Sucrase will have the greatest activity at 50 °C (122 °F) 3. Sucrase activity increases with increasing sucrose concentration Materials and Methods Effect of pH on Enzyme Activity 1. Dependent Variable amount of product (glucose and fructose) produced 2. Independent Variable pH 3. Controlled Variables temperature, amount of substrate (sucrose) present, sucrase + sucrose incubation time Effect of Temperature on Enzyme Activity 1. Dependent Variable amount of product (glucose and fructose) produced 2. Independent Variable temperature 3. Controlled Variables pH, amount of

You can also do another experiment with Pop Rocks. This experiment is called jumping Pop

4. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity.

If I put pop rocks in different sodas reacts differently to the soda, then I think certain sodas have more carbonation or sugar.

In this lab, our main focus was to find how sugar concentration affect yeast respiration rates. This was to simulate the process of cellular respiration. Cellular respiration is the process that cells use to transfer energy from the organic molecules in food to ATP (Adenosine Tri-Phosphate). Glucose, CO2, and yeast (used as a catalyst in this experiment) are a few of the many vital components that contribute to cellular respiration. Sugar/ glucose is an important carbohydrate that can be made during photosynthesis from water and carbon dioxide, using energy from sunlight. Carbon dioxide is given off as a waste product when energy is released by the breaking down of glucose. This can be used by plant cells in the process of photosynthesis to form new carbohydrates. Yeast is a single-celled fungus that can break down sugars (glucose) to help produce carbon dioxide.

What is the effect of surface area to volume ratio on the rate of diffusion of the colour from the agar jelly cube?

The solubility of a pure substance in a particular solvent is the quantity of that substance that will dissolve in a given amount of a solvent. Solubility varies with the temperature of the solvent. Thus, solubility must be expressed as quantity of solute per quantity of solvent at a specific temperature. For most ionic solids, especially salts, and water, solubility varies directly with the temperature. That is, the higher the temperature of the solvent (water), the more solute (salt) that will dissolve in it.

The data both supports and disproves the hypothesis, which was “The gobstoppers will not change in color nor will the liquid change color over time of the experiment in the different liquids”. This is because for both the Sprite and water the liquid changed in color, along with the gobstoppers within them. The gobstoppers either got lighter in color or changed in color, and the liquid changed into the original color of the gobstoppers, or something close. For Sprite trial 1 the liquid color for red went from clear, to pinkish, to red, back to pinkish, then to light orange, and finally ending with orange. For Sprite trial 2 it went from red to orange. For Sprite trial 3 it started at clear and then went to red, and then to pinkish. For Sprite trial 1 the red gobstopper color went from red, to orange, to whittish orange, back to orange, and then finally to dark orange. For Sprite trial 2 it started at red, then went to whitish pink, to yellow, to light orange, and then orange. For Sprite trial 3 the red gobstoppers color went from red, to light red, to orange, to white orange. For Sprite trial 1, for the green part of the liquid, it went from clear to green. Then for the Sprite trial 2, it started at green and went to whitish green and ended with yellow. Then in Sprite trial 3, it went from green to a darker green and then to a light green. Then for the green gobstopper in Sprite trial 1, it started at green and then became a whitish green and ended with a white. Then for the Sprite trial 2 it began with green, then went to a yellow, to whitish yellow, back to yellow, to yellowish green, and finally ended with yellow. Sprite trial 3

The experiment we did was a lab to discover how “Miracle Gro” affected the germination of seeds. My group’s original hypothesis was that the seeds with the highest concentration of “Miracle Gro” would grow the most compared to the other seeds. However, after 8 days, the results were the exact opposite; the seeds that got 0% of “Miracle Gro” turned out to be the healthiest and tallest. By the third day, all five seeds, for the water solution, where sprouting. On the other hand, the solution with 4% “Miracle Gro” only had 3 seeds starting to sprout. In addition, the average height of the seed, with pure water, after 8 days, was 8.9 centimeters whereas the average height of the seeds with 4% of “Miracle Gro” was 0.3 centimeters. The difference there is a whopping 8.6 centimeters. Not only that, but the seeds have a coating and when it separates from the seed that signals that the seed is beginning to germinate. After the 8 days, the seeds with only water were all separated from their covering, while the 4% solution only had 2 beginning to peel. Finally, we concluded that because of osmosis, the seeds with more “Miracle Gro” were bound to grow the least. Osmosis says that water wants to go into the area with the less concentration of water, in this case, the seeds. Water triggers the seed’s embryo to begin to grow again. All of this happened with the

The data observed and recorded in this lab shows that the concentration of miracle gro’ does affect the growth rate and germination speed of black eyed peas. The data is shown through two graphs and two data tables. The control group in this experiment is the seeds with a 0% concentration of miracle gro’, therefore the seeds with just water. The experimental groups are different concentrations of miracle gro’ including a 10%, 15%, 20%, 25%, and 30% concentration. The variable in this experiment is the amount/concentration of miracle gro’. On day one no seeds germinated. By day two, seeds in the control group, 15% and 25% experimental groups had germinated. On day two the experimental group with 25% concentration of miracle gro’ had the most seeds

There are several factors which affect the rate of reaction: catalyst, reactant concentration, and temperature.1,2

The purpose of this lab based on the Drosophila melanogaster (the common fruit fly) reactions. Since the fly has been studied and observed for many years, and known for its unique chemotactic attractions to different stimuli, it was an ideal organism for the study being conducted. In the experiment the purpose was to be able to figure out whether the flies would be more attracted to sugar or bacteria. The bacteria, which is found in flies’ natural food source rotting fruit, was represented by the yeast, and the sugar was represented by the maple syrup. The purpose was to be able to identify which substances the flies were attracted to the most

All the gummy bears lost their original shape. There were no changes after the first hour, but five hours later, the gummy bear in the salt solution started to break apart. After the 24 hours, the gummy bear in the salt solution completely disappeared. The only gummy bear that grew was the one in the cornstarch solution. A regular gummy bear is closed to 2 cm in size, the cornstarch gummy bear grew to 3 cm! The gummy bear in the vinegar solution shrank to 1 cm. The sugar water helped the gummy bear grow close to 2.5 cm and the gummy bear in the plain water didn't change in size.