Chapter 25 And 6 Flashcards
(6 cards)
Define half life
The time required for 1/2 the number of original radioactive nuclei to disintegrate. To find, see pink tab thing
Distinguish between the 3 main types of Ionized energy
Alpha radiation- helium nucleus and a +2 charge. This is easily blocked by skin and clothing. Mass= 4
Beta radiation- high energy (fast moving) electrons and a -1 charge. It can go through paper and skin. Mass= 1/1837
Gamma radiation- very high energy Photon, no mass and no charge. Mass=0
Know simple half life calculations
Know it
Complete and balance nuclear equations
The sum of the mass number must be on both sides of the arrow.
The sum of the atomic number must be on both sides of the arrow.
Atomic number = number on the table
Define transmutation
The conversion of an atom of one element into an atom of another element
Fusion vs. Fission
Fission (the splitting of a large nucleus into 2 or more smaller nuclei)
Examples: nuclear bombs, submarines
Fusion the joining together of 2 or more smaller nuclei to produce a heavier one.
Example: the sun, a hydrogen bomb