Nuclei
A worksheet covering the composition, size, and energy of atomic nuclei, including concepts of radioactivity, fission, and fusion. Total: 40 marks.
Section A: One Word Answers
Provide the answer in one word or a short phrase for each of the following questions.
What unit, defined as 1/12th the mass of a carbon-12 atom, is used for expressing atomic masses?
What are atomic species of the same element that differ in mass called?
What is the nucleus of the lightest isotope of hydrogen called?
Who is credited with the discovery of the neutron in 1932? (Provide surname only)
What is the general term for a particle that is either a proton or a neutron?
Section B: True or False
State whether the following statements are True or False, and provide a brief reason for your answer.