Periodic Table

The number of electrons found in the outer shell.

These electrons can be gained, lost, or shared during a chemical reaction.

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NGSS.MS-PS1-1

A chart of the elements showing the repeating pattern of their properties.

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NGSS.MS-PS1-1

Elements in the same vertical column of the periodic table.

A pure substance that cannot be broken down into other substances by chemical or physical means.

How would you use a periodic table to find elements with similar chemical properties?

• Look for elements in the same row.

• Look for elements in the same column.

• Choose elements randomly.

• Look for the heaviest elements.

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DOK Level 3: Strategic Thinking

What period does the element I - Iodine belong to?

• 17

• 6

• 3

• 5

Which box is highlighting Period 5?

Which element has the chemical symbol 'O'?

• Gold

• Oxygen

• Osmium

• Zinc

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DOK Level 1: Recall

Choose all of the areas that are considered a period.

The number of protons in the nucleus of an atom.

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NGSS.MS-PS1-1