Acids and Bases

Sodium hydroxide may be found in drain cleaners and soaps.

Is sodium hydroxide an acid or a base?

• Acid

• Base

• Neither (Neutral)

Which is the formula of sulfuric acid?

• HSO₃

• H₂SO₃

• H₂SO₄

• H₃SO₄

What is the chemical name of Mg(OH)₂?

• magnesium hydride

• hydromagnesium acid

• magnesium oxide

• magnesium hydroxide

In a neutralisation reaction, what are the products of a reaction between an acid and a base?

• A salt and hydrogen

• A salt and oxygen

• A salt and water

• A salt, carbon dioxide gas and water

What type of oxide is CaO?

• acidic oxide

• amphoteric oxide

• basic oxide

• neutral oxide

Which of the following reactions produces calcium oxide?

• calcium and oxide
• calcium and water
• calcium and air
• calcium and oxygen

How are metal oxides formed?

• When metals react with oxide.
• When metals react with water.
• When metals react with air.
• When metals react with oxygen.

Which is NOT an amphoteric oxide?

• zinc oxide

• aluminium oxide

• lead (II) oxid

• sodium oxide

Which of the following is an acidic oxide?

• sulfur dioxide

• water

• carbon monoxide

• zinc oxide

Acids are substances that release H⁺ ions when dissolved in water.

• True

• False