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| Materials composed of two or more phases wich are separated by definite boundaries called interfaces. |
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| Any material composed of two or more kinds of matter, each keeping its own characteristic properties, can be mixed in varying proportions and can be separated by mechanical means. |
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| Those materials which are uniform in composition, each part has identical properties, and consists of a single phase. |
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| Substances composed of only one kind of atom and cannot be further deocomposed by ordinary chemical means. |
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| The smallest unit of an element that can enter into combination with other elements. |
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| The smallest part of a compound with all the properties of the compound. |
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| an atom or group of atoms which possesses an overall electrical charge by gaining or losing electrons. |
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| When two or more atoms are chemically bonded and possesses an electrical charge. |
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| Compounds with have hydrogen as the only positive part of the compound. |
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| Compounds which have Hydroxide as their only negative part. |
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| Compounds which have oxygen as their only negative part. |
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| All compounds which are not acids, bases, or oxides. |
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| The sum of the gram atomic masses of the moles of the atoms in one mold of formula units of a substance. |
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| total mass of element (or H2O)/ gfm *100% |
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| A crystal which contains water of hydration. |
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| The salt that is left when the water is evaporated from the hydrate. |
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