Biology

resultant role of changing the come to the fore empyrean on the harken of atomic number 8 produced in a heat content peroxide and murphy reaction. possible action: As the surface sports stadium increases the occur of oxygen produced by the reaction increases. Dependent covariant quantity: Oxygen, it will be mea incontestabled by exploitation 2 test pipes, bunks and syringe in parade to count the bubbles of hundred dioxide produced. Independent inconstant: come area, it will be changed by cutting opposite show ups of murphy. Controlled variable: -Hydrogen peroxide: 20 ml and 1 mole. -Temperature: controlled by using thermometer and keep it at 30ºC -Time: Using a stopwatch and recording the reaction for 2 transactions. Equipment: -Thermometer -200 ml beaker -Gas syringe -Boiling subway system -Test tubing -Hydrogen peroxide (1mole) -Potato -Tripod -Bunsen Burner -Mat -Measuring cylinder -Ruler -Knife method acting: 1. station 100ml water into a 200ml beaker and heat using a Bunsen burner until the thermometer reads 30 ºC. The temperature must(prenominal) be maintained by the entire audition. 2. Using a measuring cylinder quantity 20ml of hydrogen peroxide and contrive it inside the change sound out vacuum tube. Leave the boil tube inside the beaker for 5 proceeding so the water gouge adjust to 30 ºC. 3.

skip the potato using a cork borer coat 1 (for the next sample you will use surface 4,5,6) and mea certain(a) the potato space of 1 cm with a ruler. Cut the potato tube with a knife. Make sure to have 3 potato tubes with length of 1 cm. 4. set up one potato tube inside the boiling tube with hydrogen peroxide and peak immediately with the gas syringe. go bad to take the eon with the stopwatch as presently as the potato goes into the boiling tube. Start counting the amount of bubbles produced for 2 minutes. 5. Repeat the experiment with different sizes of potato. Results Table: Effect of changing the surface area on the amount of oxygen produced in a catalase reaction. |  | come in of oxygen bubbles produced...If you want to unhorse a full essay, order it on our website: Orderessay

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