Unit Review - The Atom

What charge does a proton have?

• Positive

• Negative

• Neutral

What charge does a neutron have?

• Positive

• Negative

• Neutral

What charge does an electron have?

• Positive

• Negative

• Neutral

There are equal numbers of ___ and ___ in a neutral atom.

• protons and neutrons

• protons and electrons

• neutrons and electrons

What two particles are in the nucleus of an atom?

• Protons and electrons

• Electrons and neutrons

• Protons and neutrons

What subatomic particle(s) would be found orbiting the nucleus?

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

Which subatomic particles contribute the most to the mass of an atom?

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

An atom with atomic number 6 would have how many protons?

• 6

• 12

• 3

• cannot be determined 

What is the mass number?

• The number of protons.

• The sum of the number of protons and the number of neutrons in the nucleus of an atom.

• The number of electrons.

• The number of neutrons.

 What is the mass number of this element?

• 5

• 27

• 32

• 59