Bell Work 2/9/15

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Bell Work 2/9/15
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Student Learning Objectives

• State Standard
• SPI 0807.9.12 Identify the basic properties of
  acids and bases.
• Essential Question How can I determine if a
  substance is an acid or a base? (SPI 0807.9.12)

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Word Wall

• Complete your Wordscramble and turn-in by
  Friday.

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Acids and Bases

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66. Acids and Bases Foldable
ACID NEUTRAL BASE
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Acids and Bases Foldable
Acids
Hydronium ion Hydronium ion Hydronium ion
H H H
Tastes sour Tastes sour Tastes sour
Changes Blue litmus to Red Changes Blue litmus to Red Changes Blue litmus to Red

pH of 6.9 or lower pH of 6.9 or lower pH of 6.9 or lower
Reacts with metals Reacts with metals Reacts with metals
More H ? stronger acid More H ? stronger acid More H ? stronger acid
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Acids Continued
H H2O H3O
Examples
Orange Juice
Lemon Juice
Coffee
Tea
Soda Pop
Vinegar
pH 0 - 6.9
Strong Weak
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Neutral
Acid Base Neutral Substance
Produces a salt and water
H OH- H2O
Forms an ionic compound and water

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Neutral Continued
H2O
Salt Examples
Sodium Chloride
NaCl
Magnesium Sulfate
MgSO4
Sodium Carbonate
Na2CO3
pH 7
H2O
H OH-
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Bases
Hydroxide ion
OH-
Tastes bitter
Changes Red litmus to Blue
pH of 7.1 or higher
Feels slippery
More OH- ? stronger base
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Bases Continued
  OH-  
   
Examples Examples Examples
Window Cleaner Window Cleaner Window Cleaner
Drain Cleaner Drain Cleaner Drain Cleaner
Soap Soap Soap
Toothpaste Toothpaste Toothpaste
Mouthwash Mouthwash Mouthwash
Cough Medicine Cough Medicine Cough Medicine
pH 7.1 - 14
Weak Strong

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Exit Ticket

• Discuss with your group some properties of Acids?
  Bases?