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0620/42 Paper 4 Theory (Extended) May/June 2017
Terms in this set (4)
State the name of the process that is used to :
- obtain water from aqueous sodium chloride
- separate the precipitate formed when aqueous silver nitrate is added to aqueous sodium chloride.
- Simple distillation
What is an element ?
a substance that cannot be broken down into simpler substances by chemical means
what is a compound ?
2 or more elements chemically combined
What is an ion ?
A charged atom
- atom or group of atoms that has gained or lost an electron
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