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Chemical Bonding Practice Tests

These Grade 10 Science practice tests develop ionic, covalent, and metallic bonding, valence electrons, the octet rule, Lewis structures, compound formulas, polarity, molecular shape, and intermolecular forces.

Skills covered

  • Distinguishing ionic, covalent, and metallic bonds by tracking electron transfer, sharing, and mobility
  • Using valence electrons, the octet rule, Lewis structures, lone pairs, and bond order
  • Writing neutral ionic formulas for common cations and anions using charge balance
  • Explaining electronegativity, polar and nonpolar bonds, molecular polarity, and molecular shape
  • Comparing hydrogen bonding, dipole-dipole forces, London dispersion forces, and intramolecular bonds

How to use these practice tests

Count valence electrons first, then decide whether atoms transfer or share electrons. For formulas, balance charges; for molecular polarity, consider both bond polarity and the overall shape.

For more Grade 10 Science practice, return to the Grade 10 Science category.

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Grade 10 Chemical Bonding Practice Tests

Practice Grade 10 Science questions about ionic, covalent, and metallic bonding, valence electrons, octet rule, Lewis structures, formulas, polarity, and intermolecular forces.

Choose the best answer. Track valence electrons, charge, sharing or transfer, Lewis structures, molecular shape, polarity, and compound formulas.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the most likely formula for aluminum oxide?

Please select an answer first.

Correct answer: A

The correct answer is Al₂O₃.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Al³⁺ and O²⁻ combine in a 2:3 ratio so the total charge is zero.
  3. Check the structure or property: The correct answer is Al₂O₃.

Al³⁺ and O²⁻ combine in a 2:3 ratio so the total charge is zero.

2. QuestionMultiple choice

What is the most likely formula for calcium fluoride?

Please select an answer first.

Correct answer: B

The correct answer is CaF₂.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Ca²⁺ requires two F⁻ ions to form a neutral compound.
  3. Check the structure or property: The correct answer is CaF₂.

Ca²⁺ requires two F⁻ ions to form a neutral compound.

3. QuestionMultiple choice

Which Lewis structure description best fits ammonia, NH₃?

Please select an answer first.

Correct answer: C

The correct answer is Nitrogen has three N–H single bonds and one lone pair..

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Nitrogen contributes five valence electrons and forms three bonds while retaining one lone pair.
  3. Check the structure or property: The correct answer is Nitrogen has three N–H single bonds and one lone pair..

Nitrogen contributes five valence electrons and forms three bonds while retaining one lone pair.

4. QuestionMultiple choice

What type of bond is present between the two oxygen atoms in O₂?

Please select an answer first.

Correct answer: D

The correct answer is A double covalent bond.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: The two oxygen atoms share two electron pairs in the O₂ molecule.
  3. Check the structure or property: The correct answer is A double covalent bond.

The two oxygen atoms share two electron pairs in the O₂ molecule.

5. QuestionMultiple choice

What type of bond is present between the two nitrogen atoms in N₂?

Please select an answer first.

Correct answer: A

The correct answer is A triple covalent bond.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Nitrogen atoms share three electron pairs to complete stable outer levels in N₂.
  3. Check the structure or property: The correct answer is A triple covalent bond.

Nitrogen atoms share three electron pairs to complete stable outer levels in N₂.

6. QuestionMultiple choice

Which compound is most likely ionic?

Please select an answer first.

Correct answer: B

The correct answer is MgO.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Magnesium is a metal and oxygen is a nonmetal, so MgO forms an ionic lattice.
  3. Check the structure or property: The correct answer is MgO.

Magnesium is a metal and oxygen is a nonmetal, so MgO forms an ionic lattice.

7. QuestionMultiple choice

Which compound is most likely molecular?

Please select an answer first.

Correct answer: C

The correct answer is CO₂.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Carbon and oxygen are nonmetals that form a covalent molecular compound.
  3. Check the structure or property: The correct answer is CO₂.

Carbon and oxygen are nonmetals that form a covalent molecular compound.

8. QuestionMultiple choice

How many total valence electrons are in one H₂O molecule?

Please select an answer first.

Correct answer: D

The correct answer is 8.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Two hydrogen atoms contribute 2 electrons and oxygen contributes 6, for 8 total valence electrons.
  3. Check the structure or property: The correct answer is 8.

Two hydrogen atoms contribute 2 electrons and oxygen contributes 6, for 8 total valence electrons.

9. QuestionMultiple choice

Why does water have a higher boiling point than methane of similar molecular size?

Please select an answer first.

Correct answer: A

The correct answer is Water forms hydrogen bonds, while methane has only weaker intermolecular forces..

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Hydrogen bonding between water molecules requires more energy to overcome than methane dispersion forces.
  3. Check the structure or property: The correct answer is Water forms hydrogen bonds, while methane has only weaker intermolecular forces..

Hydrogen bonding between water molecules requires more energy to overcome than methane dispersion forces.

10. QuestionMultiple choice

Which change would most directly break covalent bonds within a molecule?

Please select an answer first.

Correct answer: B

The correct answer is A chemical reaction that rearranges the atoms.

  1. Identify the bonding concept: Determine whether the question asks about ionic, covalent, or metallic bonding, Lewis structures, polarity, formulas, or intermolecular forces.
  2. Track electrons and charge: Covalent bonds are intramolecular and are broken or formed when atoms are chemically rearranged.
  3. Check the structure or property: The correct answer is A chemical reaction that rearranges the atoms.

Covalent bonds are intramolecular and are broken or formed when atoms are chemically rearranged.

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