Science Enhanced S&S Biology - Virginia Department of ...

recognize that the pH of pure water is 7, but that various substances can lower or raise the pH. A solution with pH below 7 is acidic. A solution with a pH above 7 is basic. Materials needed. Copies of the attached student activity sheet. Molecular model kits. Deionized water. Water from various sources (e.g., tap, well, pond, stream, lake) Solutes ................
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