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CHEMISTRY UNIT 1 - PURE SUBSTANCES (Purity & Formulations (Boiling…
CHEMISTRY UNIT 1 - PURE SUBSTANCES 
Purity & Formulations
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Purity in chemistry = nothing added & in natural state e.g.. pure milk, beeswax, water
Formulations = mixtures with exact amounts of components
Pharmaceutical industry - formulation of pill important to deliver drug to correct part of body, right concentration, consumable & long enough shelf life.
Cleaning products, fuels, cosmetics, fertilisers, metal alloys, food & drink.
Have a precise purpose & made following a formula (recipe) e.g.. paints - pigment , solvent, binder, additives
Information on its composition on packaging e.g.. ratio or percentage of each component shows product's formulation so can choose right composition for particular use.
Pure substance can be solid, liquid or gas
Melting point of water = 0°C, Boiling point = 100°C
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Paper Chromatography
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