English National Curriculum - Science
Mission Objectives
Define the term ‘pure substance’ and formulation
Use data to identify pure and impure substances
Explain the terms ‘melting point’ and ‘boiling point’
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Words and meanings to learn
impure
a substance that contains more than one type of element or compound; it melts and boils over a range of temperatures
pure
a substance that is made up of only one type of element or compound; it has a fixed melting and boiling point
formulation
the precise combination of different substances to create a specific product with desired properties
substance
a single type of material, either an element or a compound, with specific chemical properties
melting point
the exact temperature at which a solid turns into a liquid
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