Oxidation and reduction - definitions
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| Modern definition of redox | Transfer of electrons (Reduction + Oxidation)
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| What is oxidation? | Loss of electrons
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| What is reduction? | Gain of electrons
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| Early definition of oxidation? | Combining with oxygen
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| What does OILRIG stand for? | Oxidation Is Loss Reduction is Gain
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| What does an oxidising agent do? | `It oxidises something else and is itself reduced
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| Chose the correct word: An oxidising agent is an electron acceptor/donor | Acceptor (has to be reduced itself)
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| Chose the correct word: A reducing agent is an electron acceptor/donor | Donor (the thing that is oxidised)
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| What is the guide to development of redox? | Electronegativity
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| What is the oxidation state of any element and why? | 0 (zero). Because oxidation states refer to atoms in compounds.
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| What does oxidation state or number refer to? | The number of electrons lost, gained or shared by an atom in a compound
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| Oxidation state = ? | charge on ion (as this is the number of electrons lost or gained)
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| What is the name of elements that nearly always have the same oxidation state in their compounds? | Fixed oxidation state
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| What is the fixed oxidation state of elements in group 1? | +1
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| What is the fixed oxidation state of elements in group 2? | +2
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| What is the fixed oxidation state of Fluorine? | -1
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| What are charged compounds called? | Compound ions
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| Define Oxidation | Oxidation is an increase in oxidation state (more positive or less negative)
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| Define Reduction | Reduction is a decrease in oxidation state (less positive or more negative)
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| Summarise in three points oxidation. | Gain of oxygen, loss of electrons, increase in oxidation number
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| Summarise in three points reduction | Loss of oxygen, gain of electrons, decrease in oxidation number
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| Is the oxidation state calculated per compound or atom? | Per atom
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