Atomic Structure Review

Which subatomic particle has a positive charge?

• Proton
• Neutron
• Electron

Which subatomic particle has a negative charge?

• Proton
• Neutron
• Electron

Which subatomic particle is neutral?

• Proton
• Neutron
• Electron

The mass number of an isotope is equal to the number of ______ in an atom.

• Protons
• Neutrons
• Protons + Neutrons
•  Electrons

Which subatomic particle determines the identity of an element?

• protons

• neutrons

• electrons

What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.

• cell

• nucleus

• atom

• electron

In order for an atom to be neutral what has to be true?

• The atom has more protons than neutrons
• The atom has more neutrons than protons
• The atom has the same number of protons and neutrons
• The atom has the same number of protons and electrons

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

How many electrons does this atom have?

• 2

• 4

• 6

• 10

How many protons are in this element?

• 79

• 196

• 117

• Cannot be determined