Download Experiement. Elephant toothpaste. scieitifc report. term1.2o12

AIM:
The objective of the experiment is to release the surplus amounts of oxygen in the hydrogen peroxide.
This is because the sign for it is h20 (2).The additional two basically means that there is an additional
amount of oxygen in the hydrogen peroxide. The objective is to see how much foam is produced if you
change the concentration of the hydrogen peroxide. Throughout the experiment, the point is to try and
see if by increasing or de-creasing the amount of the concentrate in the hydrogen peroxide, affects the
outcomes.
HYPOTHESIS:
I predict that whilst we increase the concentration of the hydrogen peroxide the changes will drastically
improve the final outcome. This is because when you increase the percentile it creates a bigger reaction
to the chemicals; a chemical reaction.
VARIABLES:
Independent: The amount if concentration that is applied for the hydrogen peroxide
Dependent: The amount of foam that is produced
Control:
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Type of yeast
Type of plastic bottle
Type of dishwashing liquid
MATERIALS:
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A clean 16 ounce plastic soda bottle
1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution)
Tablespoon (one packet) of dry yeast
3 Tablespoons of warm water
3 drops of dish-washing liquid soap
2 cap full’s of food coloring
Small beaker to mix the yeast
Safety goggles
Lab coat
A cake pan to collect the foam when overflowing.
APPARATUS:
16 oz empty plastic soda bottle (preferably with a narrow neck such as those made by CocaCola)
1/2 cup 20-volume hydrogen peroxide (20-volume is 6% solution, purchased from a beauty
supply store)
2 drops of Dawn dish detergent
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Scientific Report, Elephant Toothpaste, experimental data.
20.9.2012
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3-4 drops of food coloring
1 teaspoon yeast dissolved in approximately 2 tablespoons of warm water
PROCEDURE:
Step 1- Stand the bottle up in the center of the cake pan.
Step 2- Put the funnel in the opening.
Step3- Add 3-4 drops of food coloring to the peroxide and pour the peroxide through the
funnel into the bottle.
Step4- Show a water molecule diagram and a peroxide molecule diagram, pointing to the
extra oxygen that will be set free in the reaction.
Step5- Add the Dawn detergent to the peroxide in the bottle.
Step6- Pour the yeast mixture into the bottle and quickly remove the funnel.
Step7-The students can touch the bottle to feel any changes that take place.
Step8- Change the amount of hydrogen peroxide, during the process. This will show if
there is a significant affect.
SUFFICENCY OF DATA:
Amount of hydrogen peroxide
(ml)
Amount of foam (ml)
100
1,000
150
1, 200
300
2,500
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Scientific Report, Elephant Toothpaste, experimental data.
20.9.2012
GRAPH:
GRAPH ANYLISIS:
The graph shows that the when the amount of hydrogen peroxide increases, the more foam is created.
Each time we increased the amount of hydrogen peroxide, the results changed. When the amount of
hydrogen peroxide was 100, the foam created was 1,000, when the amount increased by 50 the foam
created was 1,200, during the last part of our experiment, when we had the largest amount of hydrogen
(300), the foam levels increased to 2,500. Therefore, the graph shows these results, and the changes
when hydrogen peroxide is increased, and how the foam is affected by this, and how the millimeters
reach higher figures.
CONCLUSION:
In conclusion, when the amount of hydrogen peroxide is increased, the higher the chemical reaction;
amount of foam created. When adding more components to the bottle: such as hydrogen, soap and hot
water, the amount of the foam increased, due to there being more chemicals, therefore an higher
chemical reaction. My hypothesis is correct, because I previously stated when there is more hydrogen
peroxide, there is more of a chemical reaction. This is shown throughout the graph, data table and
procedure. These results prove my hypothesis, correct.
EVALUATION:
If given a second chance, I would have been more prepared and brought all of the materials on the first
day, this would of given us the change to have more trials, and observe the changes more carefully. Used
measurements more carefully. Also, we could of increased the amounts of water and soap, observed if it
changed the chemical reaction, then we could conclude that hydrogen is the main trigger, in this reaction;
therefore there would be a more precisely written, conclusion.
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Scientific Report, Elephant Toothpaste, experimental data.
20.9.2012
Source of Error
Measurements
Amounts of water
Amounts of soap
Improvements
More precisely done/ measurements specific, and
properly used throughout experiment/ with
materials.
Could have seen if this changed the
outcome/chemical reaction.
Could have seen if the amount of soap changed
the results, created a stronger chemical reaction.
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Scientific Report, Elephant Toothpaste, experimental data.
20.9.2012