Mixtures, Elements and Compounds — 3 lesson(s): Inside the Atom: Protons, Neutrons and Electrons; Atomic Number, Mass Number and Electron Arrangement; Elements, Compounds, Mixtures and Alloys.
AtomNucleusProtonNeutronElectronAtomic number (Z)Mass number (A)Neutron numberElectron shellElectron arrangementElementCompound
By the end of the lesson the learner can name the three sub-atomic particles and state the charge and relative mass of each.
By the end of the lesson the learner can describe how protons, neutrons and electrons are arranged inside an atom.
By the end of the lesson the learner can relate the structure of the atom to everyday materials in Kenya.
By the end of the lesson the learner can define atomic number (Z) and mass number (A).
By the end of the lesson the learner can calculate the number of neutrons in an atom from A and Z.
By the end of the lesson the learner can write the electron arrangement of the first twenty elements.