Catalyse Inquiry Lab
Alanna Johnson, Shannon Miyoshi, Grace Balatbat, Michaela Lantrip
Experiment
In our experiment we are going to test whether the catalyst develops more bubbles in cold water, hot water or room temperature water.
Hypothesis
We believe that the hot water mixed with the hydrogen peroxide will in fact create more bubbles than the hydrogen peroxide mixed with room temp and ice water.
Experimental Group
The experimental group is the catalyse because that is the object which we are testing.
Control Group
The control group in our experiment was the room temperature water that one of the test tubes was placed in
Procedure
1. Place the catalyse in three different test tubes.
2. At the same time, place one test tube in hot water, ice cold water, and hold one to keep it at room temperature and leave it for about 2 minutes.
3. After two minutes, place an equal amount of hydrogen peroxide and leave it for 3 minutes.
4. After the 3 minutes, you will notice bubbles forming. Measure the height of oxygen bubbles and put down the data into a chart or table.
Conclusion
The purpose of this experiment was to see whether the hot, cold, or room temperature water with a catalyse and hydrogen peroxide got bubbles faster. We set up a controlled experiment where we got three test tubes, and put a catalyst in all of them. We then put one of the test tubes over the hot plate for two minutes. We put the second test tube in ice cold water for two minutes, and we left the third test tube out in room temperature. Once the two minutes were up we took each of the test tubes and evenly distributed two drops of hydrogen peroxide in each. Our results for our experiment show the test tube with the cold water had the most bubbles(1cm). The room temperature had the second highest amount of bubbles(1.3cm) and the hot water had the least(0cm). These results refute our hypothesis because we all thought the hot water mixed with the hydrogen peroxide would have a different response. We thought the mixture would have bubbled over like vinegar and baking soda does. Our experiment had sources of error which include at first not using equal amounts of hydrogen peroxide in each test tube.


