Nuclear Physics · SHS1 Physics

Lesson notes

Learning Objectives

Indicator: 1.4.2.LI.1 - Describe the structure of the nucleus of the atom.

By the end of the lesson, learners can:

Identify the protons, neutrons, and electrons as the three main subatomic particles, stating the charge and relative mass of each.
Describe the arrangement of protons and neutrons within the nucleus and the location of electrons in the atom.
Explain the role of the strong nuclear force in holding the nucleus together against the repulsive force between protons.
Use the notation A/Z X (mass number over atomic number) to represent the composition of a given nucleus.
Discuss the conditions that make a nucleus stable, including the neutron-to-proton ratio, drawing on evidence from simulations and multimedia.

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Curriculum details

Strand: Atomic and Nuclear Physics (Strand 4)
Sub-strand: Nuclear Physics (4.2)
Content standard: 1.4.2.CS.1 - Demonstrate knowledge and understanding of the nucleus of an atom. 1.4.2.LO.1 Explain the factors that account for the stability of the nucleus.
Indicator: 1.4.2.LI.1 - Describe the structure of the nucleus of the atom.
Suggested placement: Semester 2, Week 18 (Week 38 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 83

Exemplars (from the NaCCA curriculum)

Talk for Learning: Using simulations and multimedia, analyse the nucleus and let learners come out with factors that account for the stability of the nucleus.
Investigate and discuss the historical and contemporary contributions of individuals, including women and individuals with disabilities, to the development of physics.
Assessment (1.4.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.
Teaching and Learning Resources:
- Videos
- PhET interactive simulations
- Projectors
- Audio-visuals
- Atomic activity model