What is analytical chemistry?
The science of separating, identifying, and quantifying different substances.
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What is a 'chemically pure' substance?
A single element or compound that hasn't been mixed with any other substance.
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How can impurities affect the melting and boiling points of the sample?
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What physical test can you do to check that a substance is pure?
Heat it until it melts or boils. If it melts or boils at a specific temperature (rather than over a range of temperatures) then it is pure.
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What is formulation?
Formulations are mixtures that have been prepared using a specific formula.
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What are formulations made from?
Formulations are made from precise amounts of different components, and each component has a particular function.
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Name 4 examples of substances that might contain a formulation.
(there are many other examples)
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