Classifying Matter Vocabulary Flashcards

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Atom

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A small particle that is a building block of matter.

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Substance

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Matter with a composition that is always the same.

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Element

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A substance that consists of just one type of atom.

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Proton

Back

A positively charged particle in an atom's nucleus.

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Neutron

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A subatomic particle with no electric charge that is found in the nucleus of an atom.

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Nucleus

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The dense, positively charged center of an atom that contains protons (positive particles) and neutrons (neutral particles).

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Compound

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A type of substance containing atoms of two or more different elements chemically bonded together.

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Heterogeneous Mixture

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A type of mixture in which the individual substances are not evenly mixed.

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Homogeneous Mixture

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A type of mixture in which the individual substances are evenly mixed.

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Dissolve

Back

To form a solution by mixing evenly.