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Standard 4.0 Chemistry

Topic D. Physical and Chemical Changes

Indicator 2. Cite evidence and give examples of chemical properties of substances.

Objective b. Use information gathered from investigations using indicators and the pH scale to classify materials as acidic, basic, or neutral.

Selected Response Item

Substances are classified as acidic, basic, or neutral. The pH scale can be used to classify a substance.

Question Image

Which feature suggests that a substance is basic?

  1. The pH is 0.
  2. The pH is 7.
  3. The pH is less than 7.
  4. The pH is greater than 7.
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Correct Answer:
D