that which has mass and occupies space smallest particle of an element  (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)  (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight  (physics and chemistry) the simplest structural unit of an element or compound a mixture in which substances are evenly distributed throughout the mixture A mixture in which different materials can be distinguished easily the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution) a solution that cannot dissolve any more solute under the given conditions a solution that holds more dissolved solute than is required to reach equilibrium at a given temperature

1. substance

that which has mass and occupies space

2. atom

smallest particle of an element

3. mixture

(chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)

4. compound

(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

5. molecule

(physics and chemistry) the simplest structural unit of an element or compound

6. homogeneous mixture

a mixture in which substances are evenly distributed throughout the mixture

7. heterogeneous mixture

A mixture in which different materials can be distinguished easily

8. solubility

the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution)

9. saturated solution

a solution that cannot dissolve any more solute under the given conditions

10. supersaturated solution

a solution that holds more dissolved solute than is required to reach equilibrium at a given temperature