Criterion 4 - Atomic Structure and Nuclear Reaction

Question 1

Relative Atomic Mass

Answer 1

weighted avg. mass of an element. It depends on the mass of the isotopes and their abundance It is based on 1/12 of the mass of an atom

Question 2

Isotopes

Answer 2

have the same electro configuration and possess similar chemical properties but have different physical properties

Question 3

Radiation

Answer 3

Atoms with unstable combinations of neutrons and protons will undergo progressive change through a process called nuclear decay.

Question 4

Radioisotopes

Answer 4

isotopes that undergo nucleur decay.

Question 5

Terrestrial radiation

Answer 5

Decay of radioisotopes in natural materials such as rock, soils, vegetation

Question 6

Cosmic radiation

Answer 6

Radiation from space