Term 1 S2 Year 10CHEM concepts Quiz

Which of the following is an example of an element?

• NaCl

• O₂

• CO₂

• H₂SO₄

Which polyatomic ion is present in the compound Na₂SO₄?

• Carbonate

• Nitrate

• Sulfate

• Hydroxide

What is the chemical formula for sulfur dioxide?

• SO₂

• SO₃

• H₂SO₄

• S₂O₄

What is the ionic charge of iron in Fe₂O₃?

• +1

• +2

• +3

• +4

What is the product of the neutralization reaction between HCl and NaOH?

• H₂O and H₂

• H₂O and NaCl

• NaCl and CO₂

• NaOH and H₂

What is the pH of a neutral solution?

• 7

• 1

• 14

• 0

What is the chemical formula for aluminum sulfate?

• Al₂(SO₄)₃

• Al₂(SO₄)₂

• Al₂SO₄

Which of the following is the correct name for KNO₃?

• Potassium chloride

• Potassium nitrate

• Potassium nitride

• Potassium hydroxide

Which ion is produced when hydrochloric acid (HCl) is dissolved in water?

• OH⁻

• • Cl₂

• H₃O⁺

• O²⁻

How does sulfur dioxide (SO₃) contribute to acid rain?

• It reacts with nitrogen oxides to form acid.

• It increases the pH of rainwater.

• It releases carbon dioxide into the atmosphere.

• It forms sulfuric acid when dissolved in water.