Chemistry Grade 6-8

Chemistry: Reading the Periodic Table: Groups and Periods

Identifying element locations using rows and columns

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Identifying element locations using rows and columns

Chemistry - Grade 6-8

Instructions: Use a periodic table to answer each question. Read each problem carefully and show your work or reasoning in the space provided.
  1. 1
    A periodic table grid with one horizontal row highlighted to show a period.

    On the periodic table, what is a period, and which direction does it run?

  2. 2
    A periodic table grid with one vertical column highlighted to show a group.

    On the periodic table, what is a group, and which direction does it run?

  3. 3
    A periodic table grid highlighting the row and column where oxygen is located.

    Find oxygen, O, on the periodic table. What period is oxygen in, and what group is oxygen in?

  4. 4
    A periodic table grid highlighting the row and column where sodium is located.

    Find sodium, Na, on the periodic table. What period is sodium in, and what group is sodium in?

  5. 5
    Three cells in the same vertical group of the periodic table are highlighted.

    Elements in the same group often have similar chemical properties. Explain why lithium, sodium, and potassium are placed in the same group.

  6. 6
    The second row of the periodic table is highlighted from left to right.

    Which elements are in period 2 from lithium to neon? Write their symbols in order from left to right.

  7. 7
    Three elements are shown in the same horizontal period on the periodic table.

    Carbon, nitrogen, and oxygen are all in period 2. What does this tell you about their location on the periodic table?

  8. 8
    Two elements are highlighted in the same vertical group of the periodic table.

    Find chlorine, Cl, and bromine, Br. Are they in the same group or the same period? Explain your answer.

  9. 9
    The far-right group of the periodic table is highlighted for noble gases.

    The noble gases are found in group 18. Name three noble gases and give their symbols.

  10. 10
    A periodic table grid highlights the element position at period 3 and group 2.

    An element is located in period 3 and group 2. What is the element name and symbol?

  11. 11
    A periodic table grid highlights the element position at period 4 and group 1.

    An element is located in period 4 and group 1. What is the element name and symbol?

  12. 12
    Two elements in the same period but different groups are highlighted on the periodic table.

    Compare calcium, Ca, and selenium, Se. Which element is in group 2, and which element is in group 16?

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