Acids and Bases!

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Acids and Bases!
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Todays Objectives

• Students will be able to
• State and apply the Arrhenius Theory of Acids and
  Bases.
• Interpret the pH scale and use it to identify
  acids and bases.

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Do Now Predict!

• Which ones are acids and which ones are bases?

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Lets Check!
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Watch this

• http//player.discoveryeducation.com/views/hhView.
  cfm?guidAssetId7b344c6b-0c93-4666-af58-7d118eb43d
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Your Task Complete the Venn Diagram in your
lecture note guide comparing acids and bases.
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(No Transcript)
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But where do we get those numbers?

• pH -log H

Ignore this stuff
Whats this!?
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Arrhenius Theory of Acids and Bases

• ACIDS are substances that produce hydrogen ions
  in solution.
• BASES are substances that produce hydroxide ions
  in solution.

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Zooming into a solution
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Why a SOLUTION?
Remember electrolytes? Why did they conduct
electricity?
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Brainstorm

• What do you think the difference between strong
  acids and weak acids?

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To identify acids and bases
Strong Acid HCl (hydrochloric acid)
Strong Base NaOH (sodium hydroxide)
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How can you tell from the name of a compound?
HCl
NaOH
Acid
Base
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Check for Understanding 1

• Which solution contains the highest number of
  hydrogen ions?

pH 12.06
pH 7.04
pH 6.50
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Identify the following as an acid or a base.

1. HF
2. Ca(OH)2
3. H2SO4
4. HCH3COO
5. LiOH
6. H2O

Acid
Base
Acid
Acid
Base
Gotcha!