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Type: Multiple-Choice
Category: Acids and Bases
Level: Grade 9
Score: 2
Tags: base, pH scale
Author: PMISIAS
Last Modified: 7 years ago

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Acids and Bases Question

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Grade 9 Acids and Bases

If a substance is considered to be a base, that means it has which of the following set of properties?
  1. low concentration of H+ ions, has a pH value of 1 to 6
  2. low concentration of OH- ions, has a pH value of 1 to 6
  3. high concentration of H+ ions, has a pH value of 8 to 14
  4. high concentration of OH- ions, has a pH value of 8 to 14