Acids & Bases - Mr. Finke's Science Class - Home€¦ · Acids & Bases • 1. Acids and bases are...
Transcript of Acids & Bases - Mr. Finke's Science Class - Home€¦ · Acids & Bases • 1. Acids and bases are...
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Acids & Bases
• 1. Acids and bases are measured
on a pH Scale
• 2. The scale runs from 0-14,
substances less than7 are
considered to be acids, substances
greater than 7are considered to be
bases. Neutral = 7.
• Common pH Values
• 1. Gastric Juice = 1.6-1.8
• 2. Vinegar = 2.5
• 3. Soft Drinks = 2.0-4.0
• 4. Blood = 7.4
• 5. Unpolluted Rain = 5.6
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Properties of Acids
• * Tastes Sour
• * Reacts with base to
form salt
• * Turns litmus indicator
red
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Properties of Bases
• * Tastes Bitter
• * Turns litmus indicator
blue
• * Feel slippery
• * Reacts with acids to form
salts
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Acids and Bases
• Strong Acids
• 1. Hydrochloric Acid
– HCL
• 2. Nitric Acid
– HNO3
• 3. Sulfuric Acid
– H2SO4
• Strong Bases
• 1. Sodium Hydroxide
– NaOH
• 2. Calcium Hydroxide
– Ca(OH)2
• 3. Potassium Hydroxide
– KOH
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Acid Rain
• Acid rain is any
precipitation that has a pH
less than 5.6.
• The number one cause of
acid rain is the burning of
fossil fuels.
• Two Major Pollutants
• 1. Sulfur Dioxides
• 2. Nitrogen Oxides
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Acid Rain
• Acids in acid rain
• 1. Sulfuric Acid
– H2SO4
• 2. Nitric Acid
– HNO3
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Acid Rain
• What can be done to solve
the problem?
• 1. Clean up smoke stacks
and exhaust pipes
• 2. Use alternative energy
sources
• 3. Restore damaged
environment
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