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An ____ is the smallest part of a substance.
Scientists believe that everything is made of tiny _________.
An _______ is a substance that cannot be separated into simpler substances.
A ________ is a group of atoms joined together.
A ________ is a substance that has two or more elements in it.
_________ are the substances used in chemistry.
__________ are what a material or substance is like and how it behaves.
A _______ is a mixing together of two or more substances without actually joining them, so that they can be separated again.
To ________ is to mix a solid with a liquid so it becomes a liquid too.
To ______ is to make a liquid weaker or thinner by adding more liquid, often water.
Usually coffee is filtered.
___________ occurs when a liquid turns to a gas.
____________ is the change from a gas to a liquid or solid.
____________ is the separation of a liquid from other liquids by boiling it and condensing the steam.
_______ is something that remains or is left over.