The first experiment with 1 M sucrose in the bag and distilled water in the beaker had almost exactly the same results. The masses were relatively the same the difference have could been from the amount of liquid that was placed inside of each of the bags. The second experiment with 5% Ovalbumin in the bag and 1 M sucrose in the beaker had almost exactly the same results. The masses were relatively the same the difference could have been from the amount of liquid that was placed inside the bag.…
For this experiment our dependent variable was the paper with yeast on it, and our independent variable was the concentration of Hydrogen Peroxide we put in each solution. We tested the amount of time it took for the peroxide to break down yeast at 3%, 2.25%, 1.5%, .75% and 0% concentration. The fastest reaction time was 1.7 at 3% concentration. We…
To conduct this experiment, we used 5 grams of sugar and 2 grams of yeast, but only used half of each for both experiments, so 2.5 grams of sugar and 1 gram of yeast for testing the effect of temperature and 2.5 grams of sugar and 1 gram of yeast for testing the effect of a disinfectant. We then mixed each beaker with 50 mL of water and stirred to fully dissolve the sugar and yeast. Then we used a 10 cc syringe and filled it up and put it in the fermentation tube and then added an additional 5 cc’s of the sugar/yeast solution to the tube. We then sealed the tube with a piece of parafilm and placed it into a water temperature of 10 degrees Celsius and recorded the time that we put them in. We then repeated that procedure but each time putting the tubes into 20, 30, 40, 50 and 60 degrees Celsius water. After 5-minute intervals, up to 20 minutes, we measured the amount of carbon dioxide formed in the fermentation tubes by using a ruler and measuring the amount of millimeters of carbon dioxide was produced. To test the variable of how a disinfectant affected the amount of fermentation, we repeated that procedure except instead of putting each fermentation tube into a certain temperature of water, we used the same temperature of water but each tube had a different amount of bleach in it. We put 0 drops of bleach in the first one and increased by 2 drops of bleach every tube, ending up with 10 drops in the sixth fermentation tube. We monitored the amount of…
First we picked who would drop the water onto the penny. We did this to ensure that the drops were even in size. We then carefully dropped water from the dropper onto the head side of the penny while counting the number of drops.…
The yellow pod experimented to discover what happens when you put gummy bears in different types of water for one day. The yellow pod put gummy bears in a beaker filled with salt water and another container filled with tap water. The data collected shows that the tap water made the gummy bear grow faster than salt water and the gummy bear weighed 2.7 grams more when soaked in tap water compared to salt water. The tap water bear also grew 10 centimeters in height more than the salt water gummy bear. Also, the tap water bear’s leg fell off during the experiment. The hypothesis predicted that both water would make the gummy bears shrink, but the salt would make it shrink more. Based on the data collected, no further experiments will be needed.…
The purpose of this experiment was the reaction rate, and how surface area affected the reaction rate between water and alka seltzer tablets. The half crushed tablet had more particles in the tablet causing more surface area to dissolve in the water. The more surface area in the tablet, the more efficient it is in reacting in with water. Overall in my experiment, it was successful and it was a valid experiment. This experiment had taught me and to understand that the effect…
This project was to see if orange juice can benefit the body more than gatorade can. If orange juice has more electrolytes than gatorade, then orange juice can help the body stay more hydrated. Athletes care about getting enough electrolytes because the athletes need to stay hydrated when working out and playing sports. The independent variable is the orange juice, gatorade, and distilled water. The dependent variable is the electrolytes measured in milliamps. The results were that the gatorade had 0.01 milliamps more than the orange juice and the distilled water stayed at zero. The hypothesis was not supported because the hypothesis states that the orange juice has more electrolytes than the gatorade. If the experiment was repeated, the amount…
The controlled variable (what I will be keeping the same during the experiment) in this project is the amount of vinegar and baking soda put in and what type of water bottle I will be using.…
Investigate the relationship between solute concentration and water movement by filling six different dialysis bags with increasing concentrations of sucrose and placing the bags into distilled water. After the time for the experiment has elapsed, compare the initial weight of each bag with its final weight, calculate the percent change in mass, and compare data with rest of class.…
This project looks at how the temperature of an experiment can affect its reaction time. The purpose of this experiment is to determine if dissolving reactions are affected by waters temperature. I believe that if the H2O temperature increases, then the Alka-Seltzer tablet will dissolve faster because the hot water molecules will move faster colliding with the tablet particles. Water will be the independent variable due to the fact is will always stay in its same form throughout the experiment. The Manipulated variable will also be the water, since I will be changing its temperature. The Responding the variable will be the timing of how fast or slow the Alka-Seltzer tablet dissolves. And the control is the glass of water that is set at cold tap water.…
Hypothesis: If the temperature of the water is increased the time taken for the salt to dissolve completely will be shorter.…
In this experiment, the independent variables are the different types of beverages that will be used. The dependant variables (the variables influenced by the different beverages) is the running time (the time that the person will run in one lap), the amount of pushups done in one minute, how many sit-ups is completed by two minutes, and the number of jumping jacks that are done in thirty seconds. I believe that Gatorade will help your athletic performance the most, therefore the other drinks such as water, Arizona Tea, milk, Mott’s Apple Juice, and Coca-Cola is the control group. The controlled variables in the experiment (items that will stay the same) is…
The independent variable of this experiment would be the time and the type of gum used and chewed, and the dependent variable would be the percent of composition of sugar, while the controls in the experiment is the Increments of time measured, and all measurements will be measured with wrapper on. The only safety issues on this experiment would be that you can swallow the gum and you would have to get a new one. The concerns would be that someone could chew the gum for more or less of the amount of time that they were supposed to, making the experiments results inaccurate.…
EXPERIMENTAL SCIENCE PROJECTS:The Effect of Salt on the Boiling Temperature of Water(Initially prepared by a 4th Grade student)To quickly jump to a section below click on:INITIAL OBSERVATIONCooking instructions tell you to add salt to water before boiling it.PROJECT TITLEThe Effect of Salt on the Boiling Temperature of WaterPURPOSE OF THE PROJECTTo find out how table salt affects the boiling temperature of water.HYPOTHESISAdding table salt to boiling water will cause the water to boil at a higher temperature.MATERIALS AND EQUIPMENT·…
My hypothesis is: By changing the concentration of sugar, I think that the water will move from a high water concentration to a low concentration via osmosis. I predict that the more sugar concentration there is, the rate of osmosis will increase and therefore will have an effect on the results of the experiment.…