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3 Cards in this Set
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Explain excitation/ionisation |
Electrons gain energy by absorbing a photon and lose energy by releasing photons. The ground state is when the electrons are in their lowest energy state. Excitation happens when the electrons move to a higher energy level within the atom. Ionisation is when electrons get enough energy to leave the atom altogether. |
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What is an emission spectrum? |
A bright spectrum seen when photons are emitted from atoms as electrons fall from a higher energy state to a lower energy state. |
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What is an absorption spectrum? |
A spectrum of dark lines seen on a coloured background produced when a gas absorbs specific electrons which corresponds to energy transitions and leaves out all other photons that can't be absorbed. |
