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Periodic Table Practice Tests

These Grade 10 Science practice tests develop understanding of periodic law, groups, periods, element families, metals, nonmetals, metalloids, valence electrons, atomic trends, ionization energy, electronegativity, and ion prediction.

Skills covered

  • Reading groups, periods, atomic number, metals, nonmetals, metalloids, and the staircase boundary
  • Recognizing alkali metals, alkaline earth metals, transition metals, halogens, noble gases, and chalcogens
  • Explaining trends in atomic radius, ionization energy, electronegativity, metallic character, shielding, and nuclear charge
  • Using valence electrons and simple electron arrangements to locate elements and predict reactivity
  • Predicting common ions, ionic formulas, element comparisons, and periodic-table limitations

How to use these practice tests

Locate the element first, then identify its group, period, family, and valence-electron pattern. Use the direction of a periodic trend to compare elements and justify predictions about ions or compounds.

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

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Grade 10 Periodic Table Practice Tests

Practice Grade 10 Science questions about periodic law, groups, periods, element families, metals, nonmetals, metalloids, valence electrons, periodic trends, and ion prediction.

Choose the best answer. Use the element position, family, valence electrons, and periodic trends to compare properties and predict likely ions or formulas.

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

What generally happens to atomic radius from left to right across a period?

Please select an answer first.

Correct answer: A

The correct answer is It generally decreases..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Increasing nuclear charge pulls electrons closer while they remain in the same principal energy level.
  3. Check the prediction: The correct answer is It generally decreases..

Increasing nuclear charge pulls electrons closer while they remain in the same principal energy level.

2. QuestionMultiple choice

What generally happens to atomic radius down a group?

Please select an answer first.

Correct answer: B

The correct answer is It generally increases..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Additional occupied energy levels are added down a group, increasing the distance of outer electrons.
  3. Check the prediction: The correct answer is It generally increases..

Additional occupied energy levels are added down a group, increasing the distance of outer electrons.

3. QuestionMultiple choice

What is first ionization energy?

Please select an answer first.

Correct answer: C

The correct answer is The energy required to remove the first electron from a neutral gaseous atom.

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: First ionization energy measures how difficult it is to remove one electron from a gaseous atom.
  3. Check the prediction: The correct answer is The energy required to remove the first electron from a neutral gaseous atom.

First ionization energy measures how difficult it is to remove one electron from a gaseous atom.

4. QuestionMultiple choice

What generally happens to ionization energy from left to right across a period?

Please select an answer first.

Correct answer: D

The correct answer is It generally increases..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Greater effective nuclear charge usually holds valence electrons more tightly across a period.
  3. Check the prediction: The correct answer is It generally increases..

Greater effective nuclear charge usually holds valence electrons more tightly across a period.

5. QuestionMultiple choice

What generally happens to metallic character down a group?

Please select an answer first.

Correct answer: A

The correct answer is It generally increases..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Larger atoms lose outer electrons more easily, increasing metallic behavior down a group.
  3. Check the prediction: The correct answer is It generally increases..

Larger atoms lose outer electrons more easily, increasing metallic behavior down a group.

6. QuestionMultiple choice

What is shielding in an atom?

Please select an answer first.

Correct answer: B

The correct answer is Inner electrons reduce the attraction between the nucleus and outer electrons..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Inner electrons shield outer electrons from some of the nucleus attraction.
  3. Check the prediction: The correct answer is Inner electrons reduce the attraction between the nucleus and outer electrons..

Inner electrons shield outer electrons from some of the nucleus attraction.

7. QuestionMultiple choice

What happens to nuclear charge as atomic number increases?

Please select an answer first.

Correct answer: C

The correct answer is The positive nuclear charge increases because the number of protons increases..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Each increase of one in atomic number adds one proton and therefore one unit of positive charge.
  3. Check the prediction: The correct answer is The positive nuclear charge increases because the number of protons increases..

Each increase of one in atomic number adds one proton and therefore one unit of positive charge.

8. QuestionMultiple choice

What is usually true about valence-electron count within a main-group family?

Please select an answer first.

Correct answer: D

The correct answer is Elements in the same group have similar valence-electron patterns..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Main-group elements in the same group share similar outer-electron arrangements.
  3. Check the prediction: The correct answer is Elements in the same group have similar valence-electron patterns..

Main-group elements in the same group share similar outer-electron arrangements.

9. QuestionMultiple choice

Which particle is usually smaller than its neutral atom?

Please select an answer first.

Correct answer: A

The correct answer is A cation formed by losing electrons.

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: A cation loses electrons and often loses an outer energy level or reduces electron repulsion.
  3. Check the prediction: The correct answer is A cation formed by losing electrons.

A cation loses electrons and often loses an outer energy level or reduces electron repulsion.

10. QuestionMultiple choice

Why are Group 1 metals generally more reactive down the group?

Please select an answer first.

Correct answer: B

The correct answer is Their outer electron is farther from the nucleus and easier to remove..

  1. Locate the element or trend: Determine whether the question asks about a group, period, family, valence electrons, atomic size, ionization energy, electronegativity, or reactivity.
  2. Apply the periodic relationship: Greater distance and shielding make the single outer electron easier to remove.
  3. Check the prediction: The correct answer is Their outer electron is farther from the nucleus and easier to remove..

Greater distance and shielding make the single outer electron easier to remove.

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