SCIENCE REPORT
AMMONIUM NITRATE
NH4NO3
Problem
Our task was to investigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect?
Hypothesis
With a smaller quantity of water (50mls) and the same amount of Ammonium Nitrate added. After any period of time the mixture will be a cooler temperature than that of a mixture with a larger quantity of water.
Variables
X Water
X Teaspoons
X Time
X Ammonium Nitrate
X Thermometer
X Stirring (used thermometer)
« Changed/Uncontrolled Variables
- The amount of times the mixture was stirred. We stirred the mixture until the Ammonium Nitrate was dissolved, so the amount of times we stirred after each teaspoon was different.
- Each teaspoon may not have been equal. Measurements were made based on judgment and not exact measurements.
« Controlled Variables
- Amount of water used in each test was equal (100mls and 50mls).
- Total amount of Ammonium Nitrate used......
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