Chemistry

2. is a mass of one mole per single element
5. it is way to express amount of reactants and amounts of product.
8. ratio of the a mass of a solute that is present in solution, relative to the mass of a solution, as a whole.
9. a temperature at which boiling occurs for a specific liquid.
11. a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible.
12. a measure of the concentration of a substance in a solution.

1. it is capable of dissolving one or several substances, thus creating a solution.
3. substances that dissolves in a solvent to produce homogeneous mixture.
4. the number of the unit of mass of a contaminant per million units of total mass.
6. a temperature at which a liquid becomes a solid at normal aspheric pressure.
7. a measure of amount of matter in an object
10. an atom or group of atoms that has electric charge.