Physics 4.2.4 Flashcards
1
Q
What happens during Alpha Decay?
A
During Alpha Decay, an Alpha Particle is Emitted from an Unstable Nucleus.
2
Q
What is Formed in the Process of Alpha Decay?
A
A completely new Element is Formed in the Process.
3
Q
How does the Mass Number & Atomic Number of an Unstable Nucleus change when an Alpha Particle is Emitted? Why? (3)
A
-Mass Number Decreases by 4.
-Atomic Number Decreases by 2.
Because Alpha Particle is a Helium Nucleus; has 2 Protons & 2 Neutrons.
4
Q
How does the Charge on an Unstable Nucleus Change when an Alpha Particle is Emitted? Why? (2)
A
-Charge - 2.
Because Alpha Particles has 2 Protons, so when it is Emitted, the overall Charge of the Nucleus Decreases by 2.
