ABOUT H2O2: Hydro peroxide is an unstable chemical compound, H2O2 used as an oxidizing agent and bleaching agent an antiseptic and rocket fuel. We are using H2O2 in our experiment by pouring five different H2O2’s 20% 40% 60% 80% 100% one at a time in too a cylinder which there is a liver.
HYDRO PEROXIDE > WATER+OXYGEN
H2O2 > H2O + O2
PREDICTION: I predict that the chopped liver will produce more gas than the whole liver because the chopped liver has a larger surface area. I also predict that the chopped liver will create an increased amount of gas due to more oxygen in the chopped liver. As a result of the liver being chopped I would predict that more gas would be produced, as it would be more porous than the whole liver. The chopped liver mixed with 100% hydro peroxide will produce the most gas.
EQUIPMENT: 1 liver, 2 hydro peroxide 20%, 40%, 60%, 80%, 100%’s, 3 250ml measuring cylinder, 4 stirring rod, 5 50ml measuring cylinder, 6 scissors, 7 tweezers, 8 paper towels, 9 container for liver.
FAIR TEST: It is important to make an experiment a fair test so that the outcome of test is right and fair in this experiment I need to:
- Repeat the test.
- Keep the amount (volume) of H2O2 the same every time I do a test.
- Keep the mass of the liver the same.
- Chop the liver up into quarters every time.
VARIABLES: Variables are things that change in your experiment and in my experiment:
- The concentration of H2O2.
- The amount (volume) of gas produced.
SAFETY: In my experiment I need to be alert at all times, when using hydro peroxide (H2O2) I need to:
- Wear safety glasses.
- Stand up at all times.
- Keep bags and stools under desk.
- Wipe up any spillages.
- Follow the lab safety rules.
RESULTS:
This is a table to show how much gas is given off when H2O2 reacts with catalyze this table is showing the results of the whole liver.
AVERAGE:
This is a table to show how much gas is given off when H2O2 reacts with catalyze this table is showing the results of the chopped liver.
AVERAGE:
PARTICLE THEORY:
EVALUATION:
My experiment went well and I made it a fair test and my prediction matched my results I said that the chopped liver would produce more gas and it did. The chopped liver mixed with 100% hydro peroxide produced the most liver, which my prediction states. My results table shows a few anomalous results but my personal results where good.
We could produce more gas by chopping the piece of liver into more pieces and adding more cm3 of 100% hydro peroxide.
