1. Basic Atomic Structure: A Look Inside the Atom

What is the charge of a proton?

• Positive
• Neutral
• Negative
• None

What is the charge of a neutron?

• Neutral
• Negative
• Both
• Positive

How many AMUs does a proton weigh?

• 1 AMU
• 10 AMUs
• 2 AMUs
• 0.549 AMU

What are the tiny particles within an atom's nucleus?

• Protons and neutrons
• Protons and electrons
• Electrons and neutrons
• Only protons

What keeps electrons from flying away into space?

• Attraction to protons
• Gravity
• Neutrons
• Magnetic force

What is the approximate charge of an electron?

• Negative
• Neutral
• Equal to a proton
• Positive

What is the relative mass of an electron compared to protons and neutrons?

• Much smaller
• Equal
• The same
• Much larger

If the nucleus of an atom were the size of a grape, how far would the electrons be?

• Almost a mile away
• In contact with the nucleus
• A few inches away
• A few feet away

What do we call the measurement unit used to quantify the mass of atoms?

• Atomic Mass Unit (AMU)
• Mole
• Kilogram
• Gram

Which particles in the atom are responsible for its overall mass?

• Protons and neutrons
• Neutrons only
• All particles
• Electrons only