Atoms

This lesson covers:

  1. The structure of atoms
  2. The properties of protons, neutrons, and electrons
  3. How to read the periodic table
Illustration of a proton charge symbol.

What is the charge on a proton?

Positive

Negative

Neutral

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1

Which of the following make up the nucleus of an atom?

(Select all that apply)

Neutron
Electron

Proton

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2

Illustration of neutron, proton, and electron particles.

Which particle determines what element an atom is?

Protons

Neutrons

Electrons 

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1

Which particles within an atom have a relative mass of 1?

(Select all that apply)

Neutrons

Protons 

Electrons 

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2

Diagram of an atom showing subatomic particles including electrons and a nucleus.

Which sub-atomic particle does NOT have a charge?

Neutron

0

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1

What do we call an atom that has a positive or negative charge?

An element

A positron

A molecule

An ion

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1

Symbol representing the charge of an electron.

What is the charge on an electron?

Positive (+1)

Negative (-1)

Neutral

0

/

1

Diagram showing electrons orbiting the nucleus in energy shells.

Electrons orbit the nucleus in energy s.

hells

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1

If an atom has 6 protons and 5 electrons, what charge will it have overall?

-2

-1

0

+1

+2

0

/

1