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ACID & BASE SOLUTIONS

ACID & BASE SOLUTIONS. What are acids?. An acid is a substance that produces a hydronium ion (H 3 O + ) when placed in water. Examples of Acids:. Properties of Acids. Sour Taste Can damage skin and eyes Corrosive – react with metals Conduct electricity. What are bases?.

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ACID & BASE SOLUTIONS

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  1. ACID & BASE SOLUTIONS

  2. What are acids? • An acid is a substance that produces a hydronium ion (H3O+) when placed in water. • Examples of Acids:

  3. Properties of Acids • Sour Taste • Can damage skin and eyes • Corrosive – react with metals • Conduct electricity

  4. What are bases? • A base is a substance that produces hydroxide ions (OH-) when dissolved in water. • Examples:

  5. Properties of Bases • Bitter Taste • Can damage skin and eyes • Slippery when mixed with water • Conduct electricity

  6. What happens when acids & bases combine? • A salt forms when the negative ions from an acid combine with the positive ions from a base. • Neutralization – when the acid and base cancel each other out

  7. What is the pH scale? • The pH scale is used to indicate how acidic or basic a solution is. • A change in one pH unit represents a tenfold change. For example a pH of 1 is ten times stronger than a pH of 2.

  8. How is pH measured? • An indicator is a compound that changes color at different pH values when it reacts with acidic or basic solutions. • pH testing strips • pH meters

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