Atomic Structure: Understanding the Components and Properties of Atoms

Which particle is found in the nucleus and has no charge?

• Electron

• Photon

• Neutron

• Proton

What is the relative mass of an electron compared to a proton?

• Equal to a proton

• 2000 times a proton

• Twice the mass of a proton

• 1/2000 of a proton

Where is the majority of an atom's mass located?

• In the electron shells

• In the nucleus

• In the outer shell

• Evenly distributed

How does the size of the atomic radius compare to the nucleus?

• The nucleus is larger

• The atomic radius is 100,000 times larger

• The atomic radius is 10 times larger

• They are the same size

What happens when an electron absorbs a photon?

• It remains in the same shell

• It loses energy

• It moves to a lower energy shell

• It gains energy and can move to a higher shell

What is the energy level of electrons in the shell closest to the nucleus?

• Variable energy

• Medium energy

• Lowest energy

• Highest energy

How can electrons transition between different energy levels?

• By moving closer to the nucleus

• By absorbing or emitting electromagnetic radiation

• By increasing their mass

• By changing their charge