Scientific Concept Catalyst is a substance that increases the rate of a chemical reaction. Catalyst speeds up a chemical reaction but is not consumed by the reaction. The higher the concentration enzyme catalase, the higher the amount of oxygen released by the destroyed hydrogen peroxides. The higher the enzymes catalase, the higher rate of colliding collision between enzyme catalase and hydrogen peroxide, more hydrogen peroxide being destroyed and released oxygen gas. +
EngageStatement: You are given two different pictures about the ways forstudent to their lecturer room which is located on the 6th floor. Observethe picture carefully. Based on the picture, which one is faster? Give reason. What substance have similar representation with the elevator for this situation? What will happen if the amount of that substance increased?
Empower Planning And Doing Your Experiment 3% of Pressure Hydrogen Water Test tube Sensor PeroxideEnzyme Test TubeCatalase Rack
Empower Planning And Doing Your ExperimentProcedure: 1. Connect the Oxygen Gas Sensor to the computer interface. Prepare the computer for data collection by opening the file “02 (O2) Enzyme” from the Advanced Biology with Vernier folder of LoggerPro. 2. Click „Length‟ menu . 3. Change the length to 180 s, then click „ok‟ 4. Place four test tubes in a rack and label them 1, 2, 3 and 4.
5. Fill each test tube with 3 ml of water and 3 ml of 3% of .6. Connect the plastic tubing of the pressure sensor with the gentle half turned.7. Initiate the enzyme catalase reaction as follow: a) Placed 1 drop of enzyme catalase into test tube 1 b) Quickly stopper the tube. c) Swirled the test tube gently. d) Connect the other plastic tubing to the top of the stopper.
e) Then, start the data collection. Continue to swirled 3 minutes of data collection. f) Once, data collector is finished, removed the stopper from the top of the test tube.8. To determine the rate at which oxygen was produced, click analyze menu andchoose curve fit, and then click pressure9. Fold down fit equation menu and choose linear, then click „ok‟.10. The slope will represent the rate at whichoxygen was produced.
11. Repeat the experiment with different enzyme catalase concentration with 2, 3and 4 drops of enzyme catalase into test tube 2, 3 and 4 labeled test tubes.12. After completing the experiment, you can show all rums of experiment by choose„Run 4‟ and then click „All runs‟.13. Compared all the graphs.
Question :1. Which type of catalyst that being used in this experiment?2. Which concentration of enzyme catalase having the highest rate of reaction?3. What type of gas being produced?4. What is the equation can be form for the production of that type of gas?5. Compare the four graphs and give reasons.Answer :1. Positive catalyst. This is because a positive type of catalyst will increasethe rateof reaction.2. 4 drops of enzyme catalase.3. Oxygen gas.4. ( l) ( l) + (g)5. Based the four graphs, we can see that the graph for 4 drops of enzymecatalase is more slope followed by the 3 drops of enzymes catalase, 2 drops ofenzymes and the last one is graph for 1 drop of enzyme catalase. From thisresults it shows that the higher concentration of enzyme catalase, the higher thepressure of oxygen gas being detected by the pressure sensor, the graph alsomore slope. In conclusion, the higher the concentration of enzyme catalase, thehigher the production of oxygen gas.
Enhance Cloth 1 Cloth 2Statement: There are clothes that dirty with oily food residue. Which one isbetter to wash the cloth that dirty with cooking oil either the larger amount ofpowder detergent or the small amount of powder detergent? Explain.
Answer:Cloth 2 is clean better because it use the larger amount of powder detergentto clean the cloth that dirty with oily food residue. The increase amount ofpowder detergent would increase the rate of reaction to occur. The cloth 1 isslow reaction occur because the small amount of the powder detergent is useto clean a cloth. The detergent contains protein enzymes that classified asproteases. These enzymes increase the cleaning action of householddetergent by accelerating the hydrolysis of oily food residues, so that theycould be more rapidly dispersed and emulsified in water. The rate of reactionin hydrolysis of food residue is increase due the larger amount of thedetergent is use. The enzyme proteases are photolytic enzymes thatdegraded protein by cleaving the peptide bonds, thus assisting in the removalof protein-based stain such as blood and many types of food.
Unique Feature of This Activity We can stopped the data logger whenever we want because before start the experiment, we had set the time and when the time for the experiment had finished it will stopped automatically. The rate of reaction cannot be detected by our naked eyes. So, by using the data logger the reading of rate of reaction between enzyme catalase and hydrogen peroxide can be record every one minutes per hour.