Chapter 4

Question 1

Radioactiviity

Answer 1

Elements that give off rays and particles - involves protons, neutrons and sometimes electrons

Question 2

Mass defect Protons

Answer 2

Relating to the change in a particle. Has +1 charge - always repelling forces trying to force protons apart - highly compressed spring waiting to uncoil

Question 3

Strong Force

Answer 3

Keeps the nucleus together - Has a limited range - any nucleus too big will be unstable

Question 4

Neutrons

Answer 4

Acts like a glue for the nucleus - attracted to protons and other neutrons by the strong force

Question 5

Binding Energy

Answer 5

Comes from the particles themself when protons - neutrons combine, they release binding energy - More stable nucleus, greater binding energy

Question 6

Nucleus

Answer 6

Smalls nuclei want to combine to become bigger - Larger nuclei are unstable and often want to break apart to become smaller ones

Question 7

Mass defect

Answer 7

The closer to iron the more mass defect - iron has the most mass defect - if one gets closer to iron, it releases energy - if one gets further away from iron, it absorbs energy

Question 8

Critical mass

Answer 8

The better amount of mass to sustain the reaction chain the lower critical mass - the worser amount of mass to sustain the reaction chain the high critical mass

Question 9

Band of stability

Answer 9

All isotopes that are stable