Hey can someone please look at my prac and give me suggestions/feedback on what i need to change etc? thanks in advance
Write an AIM for your investigation.
To investigate the effect changes in temperature has on the catalyse enzyme function.
Write an appropriate hypothesis for your experiment.If the reaction rate is determined by the temperature then the increase in temperature between a range of 25 degrees C to 50 degrees C will speed up the rate of reaction in the catalyse enzyme and will be displayed by the height of oxygen bubbles formed.
Indentify the appropriate variables that you will be considering during your experiment.]DEPENDENT VARIABLE: Height of oxygen bubbles formed
INDEPENDENT VARIABLE: Changes in temperature, ice, 25 degrees C, 37 degrees C, 50 degrees C
CONTROLLED VARIABLE: Volume of hydrogen peroxide, weight of potatoes, amount of washing detergent used and time
Write a method that you could use to undertake your investigation. You can use dot points.
1. Take a potato and cut it up into small identical shapes and weigh each potato so they are all the same
2. Fill each test tube with 3 pieces of potato each plus 10mL of water, then place test tubes in respective water baths of different temperatures, "ice", "25 degrees Celsius", "37 degrees Celsius", "50 degrees Celsius" for 5 minutes each.
3. Empty out the water from each test tube.
4. Then fill each test tube with 20mL of hydrogen peroxide and 4 drops of washing detergent
5. Put each test tube back into the water bath
6. After ten minutes measure the rate of reaction by the height of oxygen bubbles