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Chemistry Practice Tests

These Grade 10 Science practice tests introduce matter, elements, compounds, mixtures, atomic structure, periodic patterns, chemical bonding, equations, reactions, catalysts, and energy changes.

Skills covered

  • Classifying pure substances, elements, compounds, homogeneous mixtures, and heterogeneous mixtures
  • Distinguishing physical and chemical properties, physical and chemical changes, and conservation of mass
  • Identifying protons, neutrons, electrons, atomic number, isotopes, ions, cations, anions, and valence electrons
  • Using groups, periods, metals, nonmetals, noble gases, halogens, atomic radius, and reactivity patterns on the periodic table
  • Comparing ionic and covalent bonding, molecules, formula units, balanced equations, reaction types, catalysts, and energy changes

How to use these practice tests

Start by classifying the substances or particles described. Then track atoms, charge, bonding, energy, and evidence of chemical change. Use formulas and coefficients carefully when interpreting chemical equations.

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

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Grade 10 Chemistry Practice Tests

Practice Grade 10 Science questions about matter, elements, compounds, mixtures, atomic structure, periodic trends, bonding, chemical equations, reactions, and energy.

Choose the best answer. Classify matter, identify atomic particles, use periodic trends, distinguish bonding types, and interpret chemical reactions and energy changes.

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

Which subatomic particle has a positive charge?

Please select an answer first.

Correct answer: A

The correct answer is Proton.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Protons have a positive electric charge and are located in the nucleus.
  3. Confirm the classification: The correct answer is Proton.

Protons have a positive electric charge and are located in the nucleus.

2. QuestionMultiple choice

Which subatomic particle has no electric charge?

Please select an answer first.

Correct answer: B

The correct answer is Neutron.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Neutrons are neutral particles found in the atomic nucleus.
  3. Confirm the classification: The correct answer is Neutron.

Neutrons are neutral particles found in the atomic nucleus.

3. QuestionMultiple choice

Which subatomic particle occupies the electron cloud?

Please select an answer first.

Correct answer: C

The correct answer is Electron.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Electrons have a negative charge and occupy regions around the nucleus.
  3. Confirm the classification: The correct answer is Electron.

Electrons have a negative charge and occupy regions around the nucleus.

4. QuestionMultiple choice

What does the atomic number identify?

Please select an answer first.

Correct answer: D

The correct answer is The number of protons in an atom.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Each element is defined by its number of protons, which is its atomic number.
  3. Confirm the classification: The correct answer is The number of protons in an atom.

Each element is defined by its number of protons, which is its atomic number.

5. QuestionMultiple choice

What are isotopes of an element?

Please select an answer first.

Correct answer: A

The correct answer is Atoms with the same number of protons but different numbers of neutrons.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Isotopes remain the same element because their proton number is unchanged, but their neutron numbers differ.
  3. Confirm the classification: The correct answer is Atoms with the same number of protons but different numbers of neutrons.

Isotopes remain the same element because their proton number is unchanged, but their neutron numbers differ.

6. QuestionMultiple choice

What is an ion?

Please select an answer first.

Correct answer: B

The correct answer is An atom or group of atoms with a net electric charge.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: An ion forms when electrons are gained or lost, creating an unequal positive and negative charge.
  3. Confirm the classification: The correct answer is An atom or group of atoms with a net electric charge.

An ion forms when electrons are gained or lost, creating an unequal positive and negative charge.

7. QuestionMultiple choice

What is a cation?

Please select an answer first.

Correct answer: C

The correct answer is A positively charged ion.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: A cation has more protons than electrons because it has lost one or more electrons.
  3. Confirm the classification: The correct answer is A positively charged ion.

A cation has more protons than electrons because it has lost one or more electrons.

8. QuestionMultiple choice

What is an anion?

Please select an answer first.

Correct answer: D

The correct answer is A negatively charged ion.

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: An anion has gained electrons, giving it more negative charge than positive charge.
  3. Confirm the classification: The correct answer is A negatively charged ion.

An anion has gained electrons, giving it more negative charge than positive charge.

9. QuestionMultiple choice

What happens to an atom when it loses an electron?

Please select an answer first.

Correct answer: A

The correct answer is It becomes a positively charged ion..

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Losing a negative electron leaves more positive charge than negative charge.
  3. Confirm the classification: The correct answer is It becomes a positively charged ion..

Losing a negative electron leaves more positive charge than negative charge.

10. QuestionMultiple choice

Why are valence electrons important?

Please select an answer first.

Correct answer: B

The correct answer is They are involved in chemical bonding and strongly influence reactivity..

  1. Identify the chemistry concept: Determine whether the question asks about matter, atoms, elements, compounds, mixtures, properties, bonding, or reactions.
  2. Use the scientific evidence: Valence electrons are the outer electrons most available for forming bonds and participating in reactions.
  3. Confirm the classification: The correct answer is They are involved in chemical bonding and strongly influence reactivity..

Valence electrons are the outer electrons most available for forming bonds and participating in reactions.

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