Table Salt Water Vial

Vial number one had trouble staying down but my group held it under until finally they were able to get it to stay underneath the water. The rubber band could now be removed from the tray. The respirometers were in the water for a timed three minutes to allow them to equilibrate. After the three minutes was up the initial level of oxygen that entered the pipet was recorded in our lab books. After this data was found and recorded we were finally able to begin the actual experiment testing.

In the lab we filled the first beaker up with water. Then we took a pipet (filled with the liquid) and dropped water droplets onto the

17) Pour a small amount of the hot solvent into the flask containing the solid.

The next step in this lab is to rinse the Erlenmeyer flask with distilled water down the drain and then repeat the experiment, this time adding 10 ml of 0.10M KI and 10 ml of distilled water to the flask instead. The flask should again be swirling to allow the solution to succumb to the same temperature as the water bath and once it has reached the same temperature, 10 ml of 3% H2O2 must then be added and a stopper must be immediately placed on the flask and recording should then begin for experiment two. After recording the times, the Erlenmeyer flask must then be rinsed again with distilled water down the drain. After rinsing the flask, the last part of the lab can now be performed. Experiment three is performed the same way, but instead, 20 ml of 0.10 ml M KI and 5 ml of distilled water will be added and after the swirling of the flask, 5 ml of 3% H2O2 will be added. After the times have been recorded, data collection should now be complete.

The volume of a small test tube and a thin-stemmed pipet were determined in this section of the lab. Water was poured into a small test tube until the water reached the very top edge of the test tube. The test tube was then emptied into a plastic 25 mL graduated cylinder and volume was measured and recorded into data table 3. A think-stemmed pipet was completely filled with water. Drops were carefully counted and emptied into the empty plastic 25 mL graduated cylinder until the water level reached 1 mL. The number of drops in 1 mL was recorded into data table 3. The thin-stemmed pipet had a total volume of 4 mL and that was also recorded into data table 3.

In order to carry out this experiment, we had to go through the process of multiple steps. First, we measured 100 ml of water in two different-sized square containers. The bigger container had a surface area of 225 centimeters squared, while the smaller container’s surface area was 100 cmշ. Next, we put both containers under a heat lamp for an equal amount of time. Then we set the containers aside.

(Shake the bottle vigorously). This bottle contains not only two fluids with different densities, but it also has beads with different densities. When I shake the bottle, they mix. But as it separates, the beads will also float to different levels.

The diaper contains a powdery chemical absorbent, sodium polyacrylate, which can absorb over 300 times its weight. This chemical absorbs the liquid in the diaper, pulling it away from the skin. When this powder comes in contact with a liquid, its texture changes

4. Remelt the contents of the tube and add the counterpart component based on the given schedule. Ask the demonstrator to adjust the cooling water between mixtures. During the experiment, record and plot the data obtained for all mixtures listed. The experiments are stopped as follows:

Dispense .5 mL water into the already weighed conical vial, replace cap and face insert on its down side.

Submerge the graduated cylinder in the plastic tub so that it is completely filled with water. Hold the open end of the graduated cylinder and move it vertically upside-down where the open end of the graduated cylinder is still submerged in the plastic tub. Clamp the graduated cylinder the ring stand of the lab table to keep it in place. perforate a hole in the top of the rubber cork for the solution container. Cut a straw the length of about four inches. place the straw inside of the rubber cork hole. Set up your timer for two minutes.

Attach your paperclip to your beaker, and lower your seed crystal into your solution (See Figure

Fill one bottle with 200 ml of water, and the other with 200 ml of sand. Have students verify the amount of sand and water being poured.

If it is chosen in this experiment to do this experiment with a smaller bottle of

These white crystals inside the diaper are super water absorbent and can absorb 30 times its own weight in water. When these crystals get wet they turn into a gel. When the diaper becomes wet the crystals turn into a gel-like substance. When I did the experiment the sponge did not hold as much water as I thought