Mineral Tests

by Naomi White, Science Teacher, Jefferson High School, LAUSD


DATA SHEET

Observation #1:

Observe what is left in a pan after the water is boiled away. Describe some of the properties.

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This "white stuff" is mineral deposit, mostly calcium andmagnesium.

Observation #2:

Date:Time:School:

LocationTotal Hardness (ppm)Calcium (ppm)Magnesium (ppm)Copper (ppm)Iron (ppm)














Discussion Questions:
  1. How could the mineral deposits in hard water affect pipes?

  2. Did the mineral content change in different locations of tap water?

  3. How did the mineral content of the tap water compare with themineral content of the water sample from a local body of water?

  4. What things are most important for good water quality of tap water?How does this differ from important water quality factors for naturalbodies water?

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