Chapter 25 And 6

Question 0

Define half life

Answer 0

The time required for 1/2 the number of original radioactive nuclei to disintegrate. To find, see pink tab thing

Question 1

Distinguish between the 3 main types of Ionized energy

Answer 1

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

Question 2

Know simple half life calculations

Answer 2

Know it

Question 3

Complete and balance nuclear equations

Answer 3

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

Question 4

Define transmutation

Answer 4

The conversion of an atom of one element into an atom of another element

Question 5

Fusion vs. Fission

Answer 5

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