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: A lake is full of a [[substance]] called [[water]].
: The [[sea]] is made of [[Brine|salt water]].
: A [[ruler]] can be made of a [[substance]] called [[Plastic (Material)|plastic]].: The [[substance]] that is used to make [[sword]]s swords is [[metal]].
==Key Stage 3==
===Meaning===
A [[substance]] is a particular kind of [[matter]] with the same [[Property|properties]] all through it.