Counting Particles

Counting Particles

Get your periodic table ready!

Multiple Choice

Protons have a _____ charge.

• negative

• neutral (zero)

• positive

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Find the number of protons in chlorine.

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Find the number of protons in iron.

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Find the number of protons in hydrogen.

Multiple Choice

Neutrons have a _____ charge.

• negative

• neutral (zero)

• positive

Fill in the Blanks

Find the number of neutrons in boron.

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Find the number of neutrons in nitrogen.

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Find the number of neutrons in bromine.

Multiple Choice

Electrons have a _____ charge.

• negative

• neutral (zero)

• positive

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Find the number of electrons in a neutral magnesium atom.

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Find the number of electrons in a neutral titanium atom.

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Find the number of electrons in a neutral argon atom.

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An atom has 30 protons, 37 neutrons, and 28 electrons. What element is it?

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Which element has 22 neutrons, 15 electrons, and 19 protons?