Chain Reactions and Review

January 14, 2011

Dear Period 8,

On Friday we went over Chain Reactions and Nuclear Reactors.We also received the 1st semester review packet. Webassigns are extra credit and The Test is on Monday January 10, 2011.

Notes: The atomic # determines the type of element. Isotopes is the term used to describe an element written in this format. Uraniium has an unstable nucleus, so it is always found decaying. The atoms that it is found with are atoms it has transmuted into.

Link to Alpha, Beta, and Gamma review: http://gbs-moodle.glenbrook225.org/moodle/mod/resource/view.php?id=652

Chain Reactions:

Examples: Uranium-239

Mass: 239

Atomic Numbef: 92

Event 1-2-3-4-5-6-7
# of Reactions 1-2-4-8-16-32-64

Nuclear Reactors:

Control rods- absorb neutron to slow down a chain reaction

Fuel rods- contain 3% of U-235

Moderator- Slows down neutrons, so control rods can absorb them.

Fission- Splitting of atoms for energy

Fusion- Combining atoms to release energy ex. sunstars

The answers to the review guide: http://http://gbs-moodle.glenbrook225.org/moodle/mod/resource/view.php?id=666

Homework: Finish review guide, Webassigns extra credit, and study for Quest

Anson. V