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Acids and Bases

What are Acids?

• Acids are compounds that add hydrogen ions to water

Hydrochloric Acid

What are Bases?

• Bases are compounds that add hydroxide ions to water

Sodium hydroxide

What are Bases

• Bases are compounds that add hydroxide ions to water

• hydroxide ions have the formula OH- -

-

+

+

Hydroxide ion

ACIDS • Taste sour • Turn litmus • Corrodes some metals • React with bases • Conduct electricity

General PropertiesBASES

• Taste bitter • Turn litmus • Feel soapy or slippery • React with acids • Conduct electricity

blue to red red to blue

Examples of Acids & BasesAcid

• Foods (sour/tangy) -pop -juice -fruits -vinegar

Bases • Cleaning products -baking soda -bleach -oven cleaner

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Acid or Base?Sour

Turn litmus blue Conduct electricity

NaOH Turn litmus red

hydrogen chloride solution

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Acid or Base?Bitter

Vinegar KOH

Feels slippery H2(SO4)

baking soda

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Acid or Base?

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Acid or Base?corrodes metal

lemons potassium hydroxide

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Acid or Base?

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Acid or Base

There are 4 stations. At each station you will determine if the unknown solutions are an acid or a base.