PROCEDURE My investigation was to test to see what condition borax crystals would grow best in. The problem was, “Do borax crystals grow best at room temperature, in a fridge, or in an ice bath?” My hypothesis was that the crystals would grow the largest in the freezer. My idea was that the ice would cause the crystals to expand and weigh the most out of the three. To begin this experiment, I purchased two boxes of borax to pour inside of the pot, two tall glass glasses to hold the borax solution, one ball of string to dip in the glasses, and wooden pencils to hold the string on. The other supplies that I used were screws, a large bowl, ice, and plastic wrap. Once I had my supplies, I began my experiment. First, I took my glasses and I washed them to get any dust out and, I dried them. Next, I cut my strings so that when they were tied to the pencils the …show more content…
I took another glass and placed it in the ice bath and set my bowl on the counter. Then I took my last glass and just put it on the counter. Then I took plastic wrap and covered up the jars. After five hours, I took the strings out of their jars and left them for a few hours to completely dry. RESULTS The crystals that were growing at room temperature ended up having the smallest weight out of the three. Its average weight was 28 grams. The crystals growing in the ice bath had the second highest average weight of 29 grams. The crystals that grew the largest was the one in the fridge. It ended up having an average weight of 37 grams. CONCLUSION My hypothesis ended up being incorrect. Although, I think that I was somewhat right. The crystals did grow to be the largest in a cold environment just like what I had originally thought out at the beginning of my experiment. From my experiment it shows that at least the borax crystals that I grew, grow the largest in a cold but not an icy
Then, repeat steps 7-11 another 4 times but with the room temperature water. For the room temperature water just leave it in the room but try not to change the room’s temperature. 15. Try to put all your recorded data into a table for organization 16. Repeat the entire experiment for more reliable data.
3.) Divide your 30g of white substance into the 4 test tubes evenly. You should put 7.5g into each test tube along with the water.
to get an idea of how I would do my real experiment and what apparatus
The procedure of the lab on day one was to get a ring stand and clamp, then put the substance in the test tube. Then put the test tube in the clamp and then get a Bunsen burner. After that put the Bunsen burner underneath the test tube to heat it. The procedure of the lab for day two was almost exactly the same, except the substances that were used were different. The
2. Drop a gummy bear into each of your prepared beaker or cup and place the beaker or cup
Regarding the densities of Coke and Diet Coke, I believed that the density of coke would be greater than the density of Diet Coke. Because the content of Coke contains more sugar than Diet Coke, it would contain more mass and since density is mass dependent, Coke would be denser than Diet Coke. From the results of the experiment, there was a slight difference between the densities of Coke and Diet Coke. The measurements obtained from the pipette and the graduated cylinder demonstrated that Coke is denser than Diet Coke while Diet Coke was shown to be denser than Coke using the burette. With the pipette, the average density of Coke is 1.02 and the average density of Diet Coke is 0.99. With the graduated cylinder, the average density is 0.976968 and the average density of Diet Coke is 0.95. With the burette, the average density of Coke is 0.99 and the average density of Diet Coke is 1.0. Among the three instruments, the most precise was the graduated cylinder and the most accurate was the volumetric pipette. Since density is defined as mass/volume, changing the volume of Coke or Diet Coke would have changed.
Since, a sphere has the smallest surface area for a given volume; this process makes the snow crystal round (Fig. 1.2 A). The higher the curvature is the less stable grain. In this process, the larger grains grow but smaller ones disappear. When these processes have acted on the snowpack, the grains are mostly sphere of nearly equal size, and the density is ρs ≈ 400 – 830 kg m-3 (Table 1.1). This stage of material refers to the intermediate stages of transformation as firn, wetted snow that has survived one summer without being transformed to
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
We separated into groups of two each, making sure that we had the following materials for the lab: graduated cylinder, plastic sandwich bag, starch solution, twist tie, 500-mL beaker, iodine solution, and a pair of goggles and an apron (for the person handling the iodine solution).
Potato 2. Standard sugar solution (1molar) 3. Wash bottle 4. Test tubes and test - tube rack 5. Cork borer-size (4mm diameter) 6.
2. In the large beaker, put water and boil it completely. After that, remove the beaker from heat. 3. Sample tubes (A-D) should be labeled and capped tightly.
In a 100ml beaker 30mls of water was placed the temperature of the water was recorded. 1 teaspoon of Ammonium Nitrate was added to the water and stirred until dissolved. The temperature was then recorded again. This was to see the difference between the initial temperature and the final temperature.
35, 40, 45, 50, 55, 60, 65, 70, 75 and 80 beads. The experiment was
While the jam is once again heating to a boil, fill your sink with hot water with a splash of your normal dish washing soap. Wash your jars. Either dry the jars or let them air dry before you pour the jam into
needed are a small bowl of warm water in which there is a squirt of