from a demonstration using a photocell. 5 Bohr’s hydrogen atom Understand the concepts of 3.2.2.2 Ionisation and excitation MS 0.1 Recognise and make use 8.2 ionisation and excitation, by of appropriate units in Students consider excitation, 3.2.2.3 both electrons and photons calculations ionisation and de-excitation In questions, energy levels may be of hydrogen, assuming Understand the Bohr model of quoted in J or eV discrete energy levels. discrete energy levels and how this relates to the photon model of light Be able to use the equation Be comfortable with energy values E being quoted in eV or J 6 Absorption and emission of Understand how ionisation and 3.2.2.3 Line spectra (e.g. of atomic PS 1.2 Apply scientific knowledge 8.1, 8.2, 8.3 photons by hydrogen excitation lead to absorption hydrogen) as evidence for to practical contexts spectra transitions between discrete Students observe hydrogen ATj Observe line spectra using a energy levels in atoms spectra, and consider the Understand what emission diffraction grating effect of photons on the spectra are ATk Use computer modelling to electron in a hydrogen atom collect data and the consequences for the incident light. 7 De-excitation of other Understand how ionisation and 3.2.2.2 Understanding of PS 1.2 Apply scientific knowledge 8.3 elements excitation occur in elements ionisation and excitation in the to practical contexts other than hydrogen fluorescent tube Line spectra of various elements are analysed, and Understand the application of the function of a fluorescent ionisation and excitation in the tube is studied. action of a fluorescent tube 8 Wave–particle duality Know that electron diffraction 3.2.2.4 Students should know that MS 0.4 Estimate the effect of 8.5 suggests that particles possess electron diffraction suggests that changing experimental Electron diffraction is wave properties and that the particles possess wave properties parameters on measurable values witnessed and the de Broglie photoelectric effect suggests and the photoelectric effect wavelength used. MS 1.1 Use an appropriate that electromagnetic waves suggests that electromagnetic number of significant figures have a particulate nature waves have a particulate nature MS 2.3 Substitute numerical values into algebraic equations
from a demonstration using a photocell. 5 Bohr’s hydrogen atom Students consider excitation, ionisation and de-excitation of hydrogen, assuming discrete energy levels. Understand the concepts of ionisation and excitation, by both electrons and photons Understand the Bohr model of discrete energy levels and how this relates to the photon model of light Be able to use the equation Be comfortable with energy values E being quoted in eV or J 3.2.2.2 Ionisation and excitation 3.2.2.3 In questions, energy levels may be quoted in J or eV MS 0.1 Recognise and make use of appropriate units in calculations 8.2 6 Absorption and emission of photons by hydrogen Students observe hydrogen spectra, and consider the effect of photons on the electron in a hydrogen atom and the consequences for the incident light. Understand how ionisation and excitation lead to absorption spectra Understand what emission spectra are 3.2.2.3 Line spectra (e.g. of atomic hydrogen) as evidence for transitions between discrete energy levels in atoms PS 1.2 Apply scientific knowledge to practical contexts ATj Observe line spectra using a diffraction grating ATk Use computer modelling to collect data 8.1, 8.2, 8.3 7 De-excitation of other elements Line spectra of various elements are analysed, and the function of a fluorescent tube is studied. Understand how ionisation and excitation occur in elements other than hydrogen Understand the application of ionisation and excitation in the action of a fluorescent tube 3.2.2.2 Understanding of ionisation and excitation in the fluorescent tube PS 1.2 Apply scientific knowledge to practical contexts 8.3 8 Wave–particle duality Electron diffraction is witnessed and the de Broglie wavelength used. Know that electron diffraction suggests that particles possess wave properties and that the photoelectric effect suggests that electromagnetic waves have a particulate nature 3.2.2.4 Students should know that electron diffraction suggests that particles possess wave properties and the photoelectric effect suggests that electromagnetic waves have a particulate nature MS 0.4 Estimate the effect of changing experimental parameters on measurable values MS 1.1 Use an appropriate number of significant figures MS 2.3 Substitute numerical values into algebraic equations 8.5
Physics%20SoW%20Year%201.docx