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Acids, Bases, and Salts

Acids, Bases, and Salts. Chapter 24.3. Objectives-SWBAT:. Compare and contrast acids and bases Identify the characteristics of an acid/base Examine common formulas and uses of acids and bases Define neutralization. Properties of Acids.

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Acids, Bases, and Salts

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  1. Acids, Bases, and Salts Chapter 24.3

  2. Objectives-SWBAT: • Compare and contrast acids and bases • Identify the characteristics of an acid/base • Examine common formulas and uses of acids and bases • Define neutralization

  3. Properties of Acids • Acid-substance that produces hydrogen ions in a water solution (H+) • Taste Sour • Corrosive • Indicator-an organic compound that changes color in acids and bases

  4. Common Acids • Foods • Citrus Fruit • Lactic Acid-yogurt • Vinegar • Stomach Acids

  5. Properties of Bases • Base-any substance that forms hydroxide ions in water solution (OH-) • Feel Slippery • Bitter Taste

  6. Common Bases • Cleaners • Soap • Ammonia • Baking Soda • Antacids

  7. Solutions of Acids and Bases • When an acid dissolves in water, the negative areas of nearby water molecules attract the positive hydrogen in the acid • The acid dissociates into ions and the hydrogen atom combines with a water molecule to form hydronium ions.

  8. Solutions of Acids and Bases • The positive areas of nearby water molecules attract the OH of the base. • The base dissociates into a positive ion and a negative ion. • Unlike in acid dissociation, water molecules do not combine with the ions formed from the base.

  9. Neutralization • Acid + Base  Salt + Water • A salt is a compound formed when the negative ions from an acid combine with the positive ions from a base.

  10. Review Key Concepts • Compare and contrast acids and bases • Identify the characteristics of an acid/base • Examine common formulas and uses of acids and bases • Define neutralization

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