1. Nuclear Stability and Nuclear Decay Reactions
Bozman Nuclear Reactions

2. Nuclear reactions change the composition of an atoms nucleus
Nuclear reactions change the composition of an atoms nucleus All three kinds of radiation – alpha, beta and gamma radiation are produced by nuclear reactions

3. These changes include emitting or giving off :
When the nucleus of an atom is unstable, changes are likely to take place inside it.
These changes include emitting or giving off :
Name
Identity
Charge
Penetrating Ability
alpha particle
helium nuclei 2+
low, stopped by paper
beta particle
electron 1-
medium, stopped by heavy clothing
gamma rays
high energy
non-particle radiation
none
high, stopped by lead

4. Alpha Decay of 18579Au →
Alpha Decay of 23892U →
Beta Decay of 2411Na →
Beta Decay of 22387Fr →
For the given reactions what is the missing particle? (Remember conservation of mass.)
22688Ra --> Rn + ____________
4219K --> ________________ e
31H --> e + _________________

5. Fusion Reaction – nuclei with small masses combine to form a nucleus with a larger mass
11H + 11H --> 21H e v
11H + 21H --> 32He + γ
32He He --> 42He + 2(11H)
Secrets of the SUN The Universe 44:07

6. This Is Mind Blowing!

7. Fission Reaction – nucleus divides into two or more fragments, releasing neutrons and energy.
23592U + 10n --> Kr Ba (10n)