Pebble Experiment Lab Report

For the first procedure the student put 5ml of distilled water in to a test tube then picked up one filter paper and placed it in a dish. The 5ml of distilled water was then dropped on to the filter paper. The student then grabbed alcohol for its habitat solution, and placed 5 ml of alcohol in to another test tube, and placed a new filter paper in to another clean dish. The 5ml of alcohol was then dropped on to the filter paper. Once both filter papers were submersed in the proper liquid then they were taken out of the dish and out in to individual chambers that had a connection. On the left hand side was the water filter paper and on the right hand side the alcohol filter paper. The second procedure was to grab ten pill bugs and gently place them in to the alcohol and water chamber.

First students obtained 8 graduated cylinders and labeled them. Each one contained a different ratio of vinegar and water. These graduated cylinders with the liquid were weighed and recorded.Then, students obtained an Alka-Seltzer tablet and recorded its mass. Then one alka-seltzer tablet was dropped into each of the graduated cylinders. Students had to

6.) Measure out 50ml of water from the wetland. Place filter paper in a cone shape into the glass funnel then place the funnel above an empty beaker and then pour the 50ml and the see for any precipitate, insects and dirt then record results.

To start this experiment, set up the gas collecting apparatus. To start Part A, add approximately 15mL of distilled water to the test tube and record the temperature. Use about half of an Alka-Seltzer® tablet and record the mass. Close the test tube with the stopper with the tubing and tilt the test tube so the water and tablet react. When the reaction is finished, record the volume of CO2 recovered by lining the meniscus of the graduated cylinder up with the water level.

Break an Alka-Seltzer tablet into a few small pieces and drop them into the container one at a time. When the bubbles stop add more pieces of Alka-Seltzer to see it again.

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

(c) (2 pts) Imagine that you wanted to perform a distillation at your own home (remember, distillation as a technique is not illegal—it is only illegal if you use it to produce alcohol), but you did not have the fancy lab equipment that you saw in the video. How could you do it? How could you improvise in terms of equipment? Explain the entire setup in detail and how the

XII. Take the 250 ml beaker to your lab bench. Set up a gravity filtration with a plastic funnel, folded wet filter paper, and an Erlenmeyer flask. Pour the content in the 250 ml beaker slowly through the filter paper. Wash the filter paper with deionized water. Dispose of the filtrate in the proper labeled waste container.

Filled two bags with three-quarters of water and one with the salt solution by using the pipette and the pipette pump. Closed carefully with the thread and cut the excess of bag or thread, make sure they are completely sealed before placing them in the beakers. The beakers should be labeled with the crayon and with a pen write down in the paper towel the contents of each beaker and bags respectively to avoid confusions, in the following order. 1) Bag 1 will be filled with distilled water and beaker 1 will be filled with two-thirds of 10% NaCl solution. 2) Bag 2 will be filled with 10% NaCl solution and beaker 2 will be filled with two-thirds of distilled water.

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.

The experiment procedure is first, get your materials, shells, water, vinegar, measuring spoon, a cup, and a beaker. Next,

Procedure: Cut top off 2 liter bottle and bottom off another. Fill the one without a top with water and put a

Measure 500ml of tap water in the 500cm3 beaker, then measure 5g of sodium hydrogen carbonate using the 50cm3 beaker and weight scale and place in the beaker of water, using the glass rod to dissolve it into the mixture.

The purpose of this experiment was to test how high three different brands of golf balls would bounce from 1 m off the ground. My group thought that of the three brands of golf balls, Wilson, Tieliest, and Callaway, the Wilson golf ball would bounce back the highest. This Hypothesis was not supported because the Wilson golf ball average bounce was 76.1 cm, the Callaway golf ball bounced back an average of 76.2, and the Titleist golf ball bounce an

6. Squirt water once from bottle onto each of the smarties on both pieces of filter paper