The heat from the Bunsen burner is used to increase the rate of reaction. The glowing splint will re-light once there is a presence of oxygen, meaning that the decomposition reaction of KClO3 has begun. Because this reaction is extremely exothermic, the heat given off of the reaction causes the sugar in the Gummy Bear to explode into a marshmallow-like substance.…
When combining one gummy bear, which is composed mostly of sucrose with molten potassium chloride, a violent reaction occurs. A surprising amount of energy us released by the reactant, and in process, the atom and molecule rapidly rearrange to form 3 products(CO2/H2O and KCl). This reaction is said to be products favor. A favoured product reaction is where almost all of the reactants, react to form products. In this case its sucrose and potassium chlorate react completely to form carbon dioxide, water and potassium chloride. This reaction is exothermic, releasing energy in the form of heat and light (we can see flame a bright light during the experiment). The energy released is also equal to the calorific content of the Gummy- Bear. This reaction…
ch bigger and weight more than they were before experiment.The one that got more bigger is the one that was in 20 ml acidic water and 20 ml water.Title:The gummi bears Experiment…
While the lab was going on, it was noticed the tiny pieces of beet were doing the best while the big piece of beet was not doing as well. The smaller the pieces of beet, the faster the water turns red. At the end of the experiment the tiny pieces of beet did the best while the huge piece of beet did not do as well. The tiny pieces of beet made a very bright red color while the big piece did not add much red, there was a bit of red, just not too much. The big piece of beet made a very watery red. So in conclusion with the experiment the bigger piece of beet had less surface area and could not did not interact with the environment as much as the smaller pieces of beet did.…
2. Record how many mL of solution you add into the evaporating dish then mass them together.…
Hypothesis 2: If the radish seed is in the water then it will grow faster compared to the pea seed.…
After we took that gummy bear out of the water the size of it had changed dramatically the thickness was 25mm the width was 18mm the height was 41mm and the final volume was 18450 mm 3 and that final mass was 13.28grams. Overall we could tell that there was a lot of osmosis and diffusion happening to the gummy bear. If we were to make this experiment better I would suggest leaving the gummy bear in water till it was fully diffused. Another way we could make this experiment better would be to use more expensive gummy bears so that they would not fall apart so easily. Overall I liked the experiment and thought that we got good data it was also fun seeing how much diffusion accord with our own eyes not just the smell of it…
Bag #1 increased the most in size because the solution inside was of a higher concentration of sucrose than that of Beaker #2 so therefore the solution of Bag #1 was hypotonic and water moved into the bag from the solution of the beaker at the greatest rate because it had the highest difference.…
Both glass jars were filled to a given line with the same temperature and amount of water. The experimental goldfish was placed in the jar labeled with the letter “A” and the controlled goldfish in jar “B”. A thermometer was placed into each jar containing a fish as to measure the accuracy of the water, making sure both jars were at 27°C. Each fish had two people directly counting: two people counting the mouth…
4. 4) Add 2 alka seltzer tablets and observe. 5. 5) Say ‘ Wow, that is so cool!’. ‘I love Science!’…
In the experiment, we tested a sodium chloride solution. Along with the tested solution, control groups (water and sodium phosphate) were used to be help understand whether or not NaCl was a buffer. Water was the negative control group and sodium phosphate was the positive control group. If NaCl was a buffer than the pH would be stabled as the sodium phosphate buffer. If NaCl was not a buffer than the pH would fluctuate like the negative control, water. During the first trial and prior to the drops of 0.5 M of HCl acid, the pH of sodium chloride was 7.50. After the addition of 5 drops of 0.5 M of HCl, the pH decreased by 4.83 and ended at 2.67 on the pH scale. When comparing the results of the sodium chloride to the control groups, the total pH change of sodium phosphate was only…
My hypothesis is that if I add different amounts of sugar to the same amount of boiling water and allow it to be cooled, than the one with the additional cup of sugar will be the one that grows more crystals. I determined that my hypothesis was correct. The glass I chose to add the pure cane sugar did grow much more crystals at a more rapid pace. The purpose of my experiment is to grow a large amount of crystals on a wooden skewer. Rock candy is a candy made with sugar that I chose to attempt to grow on a wooden skewer. This delicious candy is actually crystallized sugar that I grew from a sugar-water solution. In this science fair project I have learn how to grow my own rock candy and determine if you use different types of sugar, it will change the growth rate of your sugar crystals. When I added the extra cup of sugar to observation 2, it grew approximately 8 cm more than observation 1 over a period of 5 days.…
and then blew carbon dioxide into those different types of water through a straw. The…
In chemistry, accuracy and precision are very important. Accuracy is the degree of conformity of a literature value and precision is a degree to which further calculated values show similar result. In this lab, the volume of the solution (diet or regular) is measured using the Pipette, Burette, and Graduated Cylinder respectively. The mass of the solution is then measured to calculate the density of the soda. Density is mass of a substance per unit volume2. How heavy the substance is according to its size or volume. The volume of liquid is measured in mL and mass in grams. Since, the density of water is 1g/cm3 ; therefore Diet Sprite's density should be equal to or a little bit more then water. The hypothesis was that regular Sprite will have higher density because it has a higher sugar concentration present which increases the mass per volume ratio of the solution. In this experiment only regular Sprite was used. The results are then compared to another group which calculated the density of Diet Sprite.…
The graphs above show the results of two separate experiments on the same species of plant. Students now want to determine how the use of rainwater or bottled water affects the growth of this plant. Which conditions should be used for optimal growth as the two water types are tested?…