The document summarizes an experiment to test the effect of a catalyst on various fruits and vegetables. A group of students will cut samples from different fruits and vegetables, add hydrogen peroxide to test for a catalytic reaction, and measure the height and duration of bubbling to see which samples contain catalysts. The group hypothesizes that not all samples will show a catalytic reaction. They will cut equal sized samples, add hydrogen peroxide, and record bubble height at 1, 2 and 3 minutes to analyze each sample's catalytic properties.

1. Robert Russell
Biology 121---Section D
Instructor: Dr. James Onoda
Date of Assignment: 07/3/2013
Date of Submission: 07/10/2013
What affect will a catalyst have on afruit orVegetables?
Group Members:
Miriam Bigurra
Eden Gebeyaw
Liubov Nesterkova
Samiato Omototunwasha
Webster Petal
Robert Russell

2. Introduction: The group will be using a different variety of fruits and vegetables to test and see how
and if a catalyst will have an effect on it when added. A catalyst is a substance that is usually used in
small amounts, so that it can increase or modify the rate of a reaction without being consumed itself.
We will be adding 6cc of hydrogen peroxide to each item to find out how much catalyst is present. The
catalyst will break up the hydrogen peroxide into water and oxygen. We will be able to see the reaction
when it bubbles up after the peroxide is added. We will be using time and height as our criteria.
Question: Do these fruits and vegetables have catalyst?
Hypothesis: Not all of the fruits and vegetables will respond to the catalyst
Procedure: We will using a trocar 0.8cm to cut out a portion of our fruits and vegetables. We will cut
each item 4cm in length, and place them in a test tube. We will be using a stop watch to measure the
effect of the catalyst on each item. We will be measuring the height of the bubbles at 1 min, 2 min and 3
minutes. We will be using the follow vegetables and fruits for the experiment. White potato, sweet
potato, red potato, red apple, green pear, brown pear, green apple and grey pear.