Chemistry Reference
In-Depth Information
2. Use the drinking water test kit to test a sample of the water for
the presence of bacteria, lead, fertilizers, nitrates/nitrites, pH,
hardness, and chlorine. Record the results obtained from each test
on the data table.
3. Answer Analysis questions 1 and 2.
4. Label four clean beakers with the purification method that will be
used on the water in them: boiling, filtration, bleach, and iodine.
5. Pour 250 ml of water into each of the labeled beakers. Purify the
water in each beaker using the following directions:
Boiling:
a. Place the beaker of water on a hot plate.
b. Turn on the hot plate and heat the water to boiling.
c. Allow water to boil for 10 minutes.
d. Turn the hot plate off and allow the water to cool.
Filtration:
a. Place a piece of filter paper or a coffee filter into a funnel.
b. Fill the funnel about one-half full with activated carbon.
c. Place the funnel in the mouth of a clean, empty beaker.
d. Slowly pour the water sample into the funnel so that it passes
through the carbon and the paper filter.
e. Collect the filtered water from the bottom beaker.
Bleach:
a. Add 5 drops of bleach to the beaker.
b. Stir with a stirring rod for at least 30 seconds.
c. Allow the water to sit for 10 minutes before testing.
Iodine:
a. Add 5 drops of iodine tincture to the beaker.
b. Stir with a stirring rod for at least 30 seconds.
c. Allow the water to sit for 10 minutes before testing.
6. Test the water in each of the four beakers as you did with the original
water sample in step 2. Record your results on the data table.
