Forces Within The Atom

Question 0

• Force of repulsion if particles have the same charge.
  ​Example: proton (+) – proton (+)
  ​or
  ​electron (-) – electron(-)
• Force of attraction if particles have different charges.
  ​Example: proton(+) – electron (-)

Answer 0

Electromagnetic force

Question 1

Four forces within the atom

Answer 1

​1. Electromagnetic force
​2. The strong force
​3. The weak force
​4. Gravity

Question 2

*The _________ is the force that keeps electrons in orbit around the nucleus of the atom.

Answer 2

electromagnetic force

Question 3

• Opposes the electromagnetic force.
• “Glue” that holds protons together in the nucleus.
• Only works when particles are very close together.
• Is the greatest of the four forces but it has a limited range.

Answer 3

The strong torxe

Question 4

The weak force

Answer 4

• Associated with radioactivity.
• Radioactive decay (beta decay):
  ​Example: A neutron in the nucleus breaks down and turns into a proton and an electron. The electron is shot out of the atom and the proton remains in the nucleus.

​neutron → proton + electron

Question 5

• Weakest force known in nature.
• Force of attraction exterted between all objects in nature.
• Role of gravity in atom not clearly understood.

Answer 5

Gravity