https://padlet.com/perkins2/n4u0ooeq10hk Made with a curious mind en-us 2017-01-27 13:56:36 UTC 2017-02-03 18:10:27 UTC hello@padlet.com https://padlet.com/perkins2/n4u0ooeq10hk/wish/149949740 Research Question: How does pH being added to potatoes affect the enzyme reactivity?
 
Independent Variable: pH
Control Group: pH of 7
Dependent Variable: enzyme reactivity; measure the change in pH every 5 minutes to see if the enzyme reactivity as changed the pH over time and the amount of bubbles over time
Constants: Amount of fluid used, amount of potato used, room temperature
Hypothesis (Null): There will be no change in enzyme reactivity. 
Hypothesis (Alternative): There will be a change in enzyme reactivity. 
Materials: Potatoes, Acid, Base, pH meter, Test tubes, Water, Timer, Test Tube Rack
Procedure:
1. Cut potatoes into small pieces
2. put potatoes into 6 test tubes
3. put 20 mL of acid in 2 tubes, 20 mL of base in 2 tubes, and 20 mL of water in 2 tubes
4. test pH levels every 5 minutes and record any changes ]]> 2017-01-27 17:40:17 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149949740 https://padlet.com/perkins2/n4u0ooeq10hk/wish/149949928 -Research Question: How does temp affect the reaction rate of the catalyzed breakdown of hydrogen peroxide?"

-IV: temp (hot +cold)
Control Group: room temp
-DV: the rate of the reaction (seconds)
-Constants: mass of potatoes, amount of hydrogen peroxide, type of potato/glassware 
-hypothesis (null) : Temperature won't affect the rate of the catalyzed reaction.
-hypothesis (alternate) : Temperature will affect the rate of the catalyzed reaction.

-Materials: hydrogen peroxide, potato chunks, hot water, ice, thermometer, balance, test tubes,  test tube rack, graduated cylinder, timer

-Procedure: 
get out materials (test tubes)
put test tubes into various temperatures 
cut and weigh potatoes
measure hydrogen peroxide
put potatoes in hydrogen peroxide, time until end of reaction]]> 2017-01-27 17:40:52 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149949928 jv1062705 https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950091 Research Question: How do different sources of catalysis react to the hydrogen peroxide?
Materials: Glass beads, Chicken blood, chicken liver, beakers, test tubes, hydrogen peroxide, timer,  potato, stoppers, pipettes, dropper, graduated cylinder, respirometer, glass vials, syringe, tube.
Independent variable: Potato, chicken liver, glass bead, and chicken blood (Sources of catalysis).
Dependent variable: Rate of oxygen produced.
Constant:
Hypothesis Null: The level of oxygen released will be the same for all four (Sources of catalysis).
Procedure:  Attach syringes to plastic tubes, then pipettes, and then suck water from the beaker.
put chicken blood, liver, potatoes, and glass beads into vials and add hydrogen peroxide and put stopper and pipette mechanism onto vial and observe reaction.]]> 2017-01-27 17:41:27 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950091 https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950279 How does PH effect rate of oxygen release in hydrogen peroxide solution with potatoes. 

Materials: 
Potato Chunks
Strong Acid 
Strong Base
Water
Glassware

IV: PH
DV: Reaction time

Procedure. 
Potato soaked in strong acid
potato soaked in strong base 
potato soaked in water (control)
for 10-15 mins 
Then put in hydrogen peroxide and measure time ]]> 2017-01-27 17:42:05 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950279 https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950454 Research Question: How do different sources of catalase affect the temp. change produced by Hydrogen Peroxide?
Materials: Chicken Blood
potatoes
Hydrogen peroxide 
Chicken Liver
Beakers 
Test tubes
Stopwatch
Temp. Probes
Constant: Amount
Ph Level
Water Temp
Control: Hydrogen Peroxide
Independent Variable: Catalase
Dependent Variable: Heat
Alternate Hypothesis: The rate of Hydrogen peroxide breakdown will be affected by different sources of catalase
Null Hypothesis: Different Catalase won't affect the rate of hydrogen peroxide breakdown 
Procedure: Place test object into the test tube, cap off test tube with a stopper, and place temperature probes into test tube. At 1 minute intervals stop and record heat given off by the catalase.


]]> 2017-01-27 17:42:40 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950454 pw12144 https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950777 Research Question: How does light affect the rate of hydrogen peroxide breakdown.

Independent Variable: The amount of sunlight.

Dependent Variable: The rate of hydrogen peroxide breakdown.

Materials:
Dark Room
Room with direct sunlight
Glass ware
Stop watch
Hydrogen Peroxide

Procedures:
Sit one glass beaker in sunlight and one beaker in the dark.
Put your stop watch in your hand
Slowly pour the hydrogen peroxide in the beaker and start the timer
Stop the timer once the reaction begins.

Null Hypothesis:
The different amount of light will not affect the rate of hydrogen peroxide breakdown.

Alternate Hypothesis:
The different amounts of light will affect the rate of hydrogen peroxide break down.

]]> 2017-01-27 17:43:40 UTC https://padlet.com/perkins2/n4u0ooeq10hk/wish/149950777