Acids & Bases

True or False: Pure H₂O dissociates into H3O⁺, which is associated with alkalinity, and OH⁻, which is connected with acidity

• True

• False

True or False: An acid is a substance which in solution accepts hydrogen ions, H⁺, or more strictly H₃O⁺

• True

• False

True or False: A base is a substance which either contains the oxide O^2- or hydroxide ion OH^-, or in solution produces the hydroxide ion.

• True

• False

A soluble base is known as an

• acidic

• aqueous basic

• alkali

• un-acidic base

What is a property of bases?

• Slippery touch

• Sour taste

• Ability to corrode a metal

• Ability to form hydronium ions

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

What is an indicator?

• A substance that changes colour in acid or alkali.

• A substance that produces hydrogen gas when reacted with acids.

• A substance that is neutral.

• A substance that is always red in colour.

pH is the measure of the concentration of ______.

• Acids

• H⁺ ion

• OH^- ion

• Bases

Pure water is _______ on the pH scale.

• Acid

• Base

• Neutral

Values from 0-14 that determine the acidity of a solution

• Molarity
• Polarity
• pH scale
• Solubility