Monday, December 21, 2009
Water testing
Hypothesis ; I think it will be positive because rain water is dirty.
Procedure ; I took a sample of rainwater then put the test strip for 3 second in the water , then waited 1 minute to see the test results.
Results ; the results were negative the color that it came out to was 0 .
Explanation ; i think mine came out like this because rainwater isn't nitrates
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