Quiz on Atomic Structure

What is the smallest indivisible unit of matter that retains the properties of an element?

• Molecule

• Atom

• Proton

• Electron

What subatomic particles are found in the nucleus of an atom?

• Electrons and protons

• Neutrons and electrons

• Protons and neutrons

• Electrons only

Tags

NGSS.HS-PS1-8

Which subatomic particle has a positive electrical charge?

• Neutron

• Electron

• Proton

• Atom

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

What is the role of electrons in forming chemical bonds?

• They are shared with other atoms

• They remain in the nucleus

• They have no role

• They only repel other electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Diagram of a carbon atom showing protons, neutrons, and electrons.

• Diagram of a nitrogen atom showing protons, neutrons, and electrons.

• Diagram of an oxygen atom showing protons, neutrons, and electrons.

• Diagram of a hydrogen atom showing protons, neutrons, and electrons.

• Diagram of a carbon atom showing protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

What is an element composed of?

• Multiple types of atoms

• Only one type of atom

• Two or more types of atoms

• A mixture of compounds

How many elements are currently known to scientists?

• 94

• 118

• 24

• 102

How many elements occur naturally on Earth?

• 24

• 118

• 94

• 102

What does the atomic number of an element represent?

• Number of electrons

• Number of neutrons

• Number of protons

• Number of atoms