4.1.1

Acids & Alkalis

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Acids and Alkalis

Acids and alkalis are on the opposite ends of the pH scale. They combine to form water, which is neutral.

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Acids

  • Acids are substances that form hydrogen (H+) ions when they dissolve in water (aqueous solutions).
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Alkalis

  • Alkalis are substances that form hydroxide (OH-) ions when they dissolve in water (aqueous solutions).
  • An alkali is a type of base.
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Measured using pH scale

  • The pH scale is used to measure how acidic or alkaline a substance is.

Jump to other topics

1Atomic Structure

2Chemical Bonding

3Quantitative Chemistry

4Chemical Changes

5Energy Changes

6The Rate & Extent of Chemical Change

7Organic Chemistry

8Chemical Analysis

9Chemistry of the Atmosphere

10Using Resources

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