Atomic Structure

The smallest particle of an element.

• Element

• Molecule

• Atom

Value representing the number of protons in an element

• Atomic Mass

• Mass Number

• Valence Electrons

• Atomic Number

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

Complete the missing label on the diagram.

• Neutron
• Centre
• Nucleus
• Sub atomic particle

Which particle is negatively charged?

• proton

• atom

• neutron

• electron

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

What number indicates the nucleus?

• 1
• 2
• 3
• 4

How many electron shells/levels does this atom have?

• 1
• 2
• 3
• 4

How many Protons are in one atom of Lithium?

• 3
• 6
• 7
• 6.941