What you’ll learn8 learning objectivesChoose one objective for a focused lesson, or study the complete topic.5.1.2.1Composition of the nucleus in terms of• Describe the composition of the nucleus in terms of protons and neutronsSyllabus objective5.1.2.2Relative charges of protons, neutrons• State the relative charges of protons, neutrons and electrons as +1, 0 and –1 respectivelySyllabus objective5.1.2.3Terms proton number (atomic number) Z• Define the terms proton number (atomic number) Z and nucleon number (mass number) A and be able to calculate the number of neutrons in a nucleusSyllabus objective5.1.2.4Nuclide notation A ZX• Use the nuclide notation A ZXSyllabus objective5.1.2.5What is meant by an isotope and state• Explain what is meant by an isotope and state that an element may have more than one isotopeSyllabus objective5.1.2.6Processes of nuclear fission and• Describe the processes of nuclear fission and nuclear fusion as the splitting or joining of nuclei, to include the nuclide equation and qualitative description of mass and energy changes without valuesSyllabus objective5.1.2.7Relationship between the proton number• Know the relationship between the proton number and the relative charge on a nucleusSyllabus objective5.1.2.8Relationship between the nucleon• Know the relationship between the nucleon number and the relative mass of a nucleusSyllabus objective