pH, Acid, Bases CW

Which of the following word pairs correctly completes the sentence below? (a)   are corrosive substances characterized as having a strong smell, a sour taste, and a  (b)   .

• Acids; pH less than 7
• Acids; pH greater than 7
• Bases; pH greater than 7
• Bases; pH less than 7

Which of these pH values would indicate that a solution is a strong base?

• 4

• 5.6

• 8

• 13

Which of the following is true about acids and bases?

• The lower the pH, the stronger the acid
• the higher the pH, the stronger the acid
• The lower the pH, the more neutral the acid
• The higher the pH, the weaker the base

On the pH scale what numbers are bases?

• 8-14
• 0-7
• 7
• 1

The pH scale measures...

• ...the strength of an acid.
• ...the strength of hydrogen ions.
• ...the concentration of hydrogen ions.
• ...the concentration of an acid

A compound that changes color when it is in contact with an acid or base and tells us the pH of a solution is called______________

• Acid

• Base 

• Neutral

• Indicator

Hydrogen ion concentration is also written as:

• [H₂O]

• [H₃O⁺]

• [OH^-]

• [H⁺]

An acid

• is a substance that releases H+ ions when dissolved in water

• is a substance that does not release any ions when dissolved in water

• is a substance that releases OH- when dissolved in water

• releases an equal amount of OH- and H+ ions when dissolved in water

When dissolved in water, acids produce:

• bases
• salts
• hydrogen ions
• hydroxide ions

If water is neutral

• there is more hydronium than hydroxide

• there is more hydroxide than hydronium

• hydroxide and hydronium are equal

• there is no hydronium or hydroxide present