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Chemistry Class: Acids and Bases

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Questions and Answers

Which of the following is a property of acids?

Contain hydroxide ions (OH⁻)
Slippery texture
Sour taste (correct)
Bitter taste

Bases turn blue litmus paper red.

False (B)

What gas is produced when acids react with metals?

hydrogen gas

Acids react with carbonates to release __________ gas.

<p>carbon dioxide</p> Signup and view all the answers

Match the following properties with either acids or bases:

<p>Sour taste = Acids Bitter taste = Bases Contain hydrogen ions (H⁺) = Acids Contain hydroxide ions (OH⁻) = Bases</p> Signup and view all the answers

Flashcards

Acid

A substance that tastes sour, turns blue litmus paper red, and releases hydrogen ions (H+) in solution.

Base

A substance that tastes bitter, feels slippery, and releases hydroxide ions (OH-) in solution.

Indicator

A substance that changes color in the presence of an acid or a base.

Neutralization reaction

A reaction between an acid and a base that neutralizes both substances.

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pH scale

The measure of how acidic or basic a solution is, with a pH of 0 being the most acidic and 14 being the most basic.

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Study Notes

Indicators

Indicators are substances that change color in the presence of acids or bases.

Properties of Acids

Acids have a sour taste.
Acid molecules contain hydrogen ions (H+).
Acids react with metals to produce hydrogen gas.
Acids react with carbonates to release carbon dioxide gas.
Blue litmus turns red in an acid.

Uses of Acids

Used in the production of fertilizers.
Used in the production of explosives, oil purification, and medicines.
Used in the preparation of various chloride salts.
Used in batteries (e.g., sulfuric acid).
Used for water sterilization.
Used in making white paper from wood pulp.

Properties of Bases (Alkalines)

Bases have a bitter taste.
Bases are slippery to the touch.
Bases contain hydroxide ions (OH-).
Metal oxides are generally basic.

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