Add liver to each of the test tubes at the same time.
The independent variable is pH of the solution added to e ACH test tube. Add 4 drops of HCI to the first test tube, 1 rope HCI and 3 ml water to second, 4 drops Noah to third, 1 drop Noah and 3 ml water to fourth, and 3 drops water to fifth. Record the reaction rat Add 2 ml hydrogen peroxide to each of 5 clean test tubes. The temperature of each set of liver and peroxide is the independent variables.Īfter 3 minutes, pour e ACH tube of H2O into the corresponding tube of liver and observe the reaction. Place the other set in a warm water bath (not b oiling). Put one test tube of liver and one of H2O into an ice bath. Put equal quantities of liver into 2 clean test tubes and 1 ml H2O into 2 other test tube s. Use a destitute holder for hot test tubes. The fact that the liver was boiled is the independent variable. Remove the test tub e from the hot water bath, allow it to air cool, then pour out the water. Place this test tube in a boiling water bath for 5 minutes. C Put a piece of liver into the bottom of a clean test tube and cover it with a SMS all amount of water. As you add each test substance, record the reaction rate for each tube. The three substances are the independent variables.
B Place 2 ml of hydrogen peroxide in each of 3 clean test tubes and then add EAI chi of the three test substances (potato, apple, chicken) to the tubes. The reaction rate will be the dependent Varian able in each experiment.Īdd another 2 ml of hydrogen peroxide to the liver remaining in the first test tube. This used liquid is the independent Varian able. Pour off the liquid into a second test tube. The 05 scale based on bubbles is the measurement technique e for each experiment. This rear action is the control group for the experiment. Assume this reaction is rated 4 on a scale of 05. Push it into the hydrogen peroxide with a stirring rod.
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