Chapter 6 Grade 10 SABIS Quiz 1 Introduction to Ions

What do atoms gain or lose to become ions?

• Neutrons
• Protons
• Electrons

Which of these is a monatomic ion?

• H2O
• Na⁺
• CO2

How many electrons does a Sodium atom (Na) lose to become an ion?

• Gains 1 electron
• Loses 2 electrons
• Loses 1 electron

Which of the following is a monatomic ion?

• H2O
• Na⁺
• CO2

Which element loses 2 electrons to form a monatomic ion?

• Sodium
• Carbon
• Magnesium

What is the charge of the nitrate ion (NO₃⁻)?

• 1-
• 2-
• 2+

How many atoms are there in the sulfate ion (SO₄²⁻)?

• 4
• 5
• 6

Which of these is a polyatomic ion?

• Na⁺
• Cl⁻
• OH⁻

What two elements make up the ammonium ion (NH₄⁺)?

• Nitrogen and Hydrogen
• Nitrogen and Helium
• Hydrogen and Helium

Which of the following is not a polyatomic ion?

• NO₃⁻
• SO₄²⁻
• Na⁺