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Acids and Bases

Acids and Bases. The Yin and Yang of Water. What are acids and bases?. Imagine a molecule of water has been broken in half. What are acids and bases?. Imagine a molecule of water has been broken in half. What are acids and bases?.

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Acids and Bases

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  1. Acids and Bases The Yin and Yang of Water

  2. What are acids and bases? Imagine a molecule of water has been broken in half.

  3. What are acids and bases? Imagine a molecule of water has been broken in half.

  4. What are acids and bases? The negative half is in bases and the positive half is in acids. That is why they are like the Yin and Yang of water!

  5. What are acids and bases? The negative half is in bases and the positive half is in acids.

  6. Base Properties • Slippery • Bitter tasting • Above 7 on pH scale • Neutralizes acids • Used for cleaning • Contain hydroxide ions (OH-) • Turn litmus paper or indictors blue

  7. Examples of Bases • Baking soda • Soap • Ammonia (Windex) • Milk of Magnesia

  8. Acid Properties • Corrosive (burns skin… among other things) • Sour tasting • Below 7 on pH scale • Neutralizes bases • Found in many foods • Contain hydronium ions (H+ or H3O+) • Turn litmus paper or indictors red

  9. Examples of Acids • Citric acid (lemons and oranges) • Ascorbic acid (Vitamin C, flavoring for sour candy) • Vinegar • Battery acid

  10. pH Scale The pH scale is a way to measure how acidic or basic (alkaline) a solution is.

  11. pH Scale When hydroxide and hydronium ions combine, they neutralize each other to become water.

  12. pH Scale When hydroxide and hydronium ions combine, they neutralize each other to become water.

  13. pH Scale If there are more hydroxide ions (OH-) left, the solution is alkaline or basic ad will have a pH value above 7.

  14. pH Scale If there are more hydronium ions (H+) left, the solution is acidic and will have a pH value below 7.

  15. pH Scale If the hydronium and hydroxide ions are equal, the solution will be neutral or 7 on the pH scale.

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