1. Nuclear Chemistry

2. What are the 2 Types of Nuclear Reactions
Fission
Fusion

3. Fission Nucleus must be large
Only atoms with atomic #’s at or above 90 can undergo fission
Nucleus is hit with a free neutron causing the atom to split into 2 new and different atoms as well as 3 free neutrons. The free neutrons then hit and split another atom and the process keeps repeating itself.

4. Fission Fission means “to divide”
Nuclear Fission is the process in which an atom’s nucleus is split into 2 nuclei with smaller masses

5. Example of Nuclear Fission
Nuclear Power Plants

6. Nuclear Weapons
Atom Bomb or A Bomb
Nuclear Submarines

7. Fusion Also known as thermonuclear reactions
Process in which 2 atomic nuclei with low masses are fused into a single nucleus of larger mass

8. Fusion Fusion means “to fuse”
2 low mass nuclei combine or fuse to form a new atom

9. Examples of Fusion The sun is a big fusion reactor
Hydrogen is converted
into helium

10. Black Hole

11. Nuclear Weapons
Hydrogen Bombs or
H - Bombs

12. Isotopes
Isotopes – Atoms of the same element that have a different number of neutrons
H21
H is the atomic symbol
Superscript is the mass number (neutrons + protons)
Subscript is the atomic number
Can also be written as H-2

13. Conclusion