Isotopes

Question 1

Stable

Answer 1

Describes a nucleus that does not change spontaneously. The protons and neutrons in the nucleus are held together strongly

Question 2

Unstable

Answer 2

Describes an atom in which the neutrons and protons in the nucleus are not held together strongly.

Question 3

Radioisotopes

Answer 3

A radioactive form of an isotope

Question 4

Nuclear radiation

Answer 4

Radiation from the nucleus of an atom consisting of alpha or beta part led or grammar Ray’s

Question 5

Particles

Answer 5

Charged particle (Positive or negative) with the same size and mass as electrons.

Question 6

Alpha particles

Answer 6

Positively charged nuclei of helium atoms consisting of two protons and two neutrons.

Question 7

Half - Life

Answer 7

Time taken for half the radioactive atoms in a sample to decay - that is change of atoms into a different element

Question 8

Cosmic Radiation

Answer 8

Naturally occuring background radiation from outer space.

Question 9

Isotopes

Answer 9

Atoms of the same element that differ in the number of neutrons in the nuceulues.