ECM Definitions

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Atom

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The smallest unit of matter that still retains the properties of an element.

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Molecule

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Two or more atoms bonded together. Molecules can be made of the same type of atoms or different atoms.

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Element

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A substance made of only one kind of atom. There are over 100 different ones.

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Compound

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A substance made of two or more different types of atoms chemically bonded together.

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Mixture

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A combination of two or more substances that are not chemically bonded. They can be separated by physical means.

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Chemical Bond

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The force that holds atoms together in a molecule or compound.

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Matter

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Anything that has mass and takes up space.

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States of Matter

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The different forms that matter can take - solid, liquid, gas.