Acids & Bases (Properties)

Which of the following is an acid?

• Water

• Bicarbonate of soda

• Apple juice

Which of the following statements are correct?

• Acids ionise in water to produce H⁺ ions.

• Strong acids ionise partially in water to produce H⁺ ions.

• Weak acids ionise fully in water to produce H⁺ ions.

• Alkalis are soluble bases.

Which of the following item is acidic?

• Coffee

• Blood

• milk

• Soap

According to the pH scale, which item is more acidic than lemons?

• battery

• vinegar

• milk

• blood

Reacts with metals

• acid

• base

• both acid and base

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

The lower the pH, the greater the concentration of :

• OH-
• H+

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

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

All bases have a sour taste.

• True

• False