photon - 'particle' of radiation, gamma - highest energy photon, Directly Proportional - Relationship between photon frequency and energy, Inversely Proportional - Relationship between photon wavelength and energy, x 1.6 x 10-19 - To go from eV to J, ÷ 1.6 x 10-19 - To go from J to eV, Absorbed - When a photon collides with an atom it is, Transfers some energy (not all) - When an electron collides with an atom it, Q - Charge symbol, Milli - x10-3, Micro - x10-6, Nano - x10-9, Femto - x10-12, Giga - x109, Mega - x106, Kilo - x103, e - Symbol for charge on an electron, +3e - An ion that loses 3 electrons will have this charge, -3e - An ion that gains 3 electrons will have this charge, n=1 - Ground state, n=infinity - Ionized state, n=3 - Excited state, Unstable - How we would describe an excited state, Emission Spectra - Series of well defined coloured lines at certain wavelengths, Absorption spectra - Series of well defined black lines on a continuous spectra, Seconds, Kilograms - Examples of base units, Newton, Joule - Example of derived units,

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