Key terms

5. Simplified b adding a little to the number to the left or taking a little away.
7. The full amount of the final volume in a drug product with all ingredients, the solutes and diluent solution.
9. The ability to maintain a drug’s potency and integrity in its compounded form
10. a system of measurement based on the apothecary system; units of measurement include the ounce, pound, drop, teaspoon, tablespoon, and cup.
11. a small dry-weight unit of measurement in the apothecary system
12. A number that represents a chemical element’s capacity to combine with others to form a molecule of a stable new compound, based on the number and activity of the exterior electrons.
14. Dissolved mineral salts in a fluid.
15. A method of calculating the proportions of two different substances to be combined in a new product to create different concentrations of the active ingredient.
17. The ratio of the weight of a substance compared to an equal volume of water when both are the same temperature at sea level.
20. The volume that a diluent takes up in a solution.
21. A system of measurements used historically across the British Empire with inches, feet, yards, furlongs, and miles, as well as fathoms and nautical miles, fluid, ounces, drams, pints, quarts, and gallons; grains, pounds, stones, and tons.

1. A measurement system basedo n subdivisions and multiples of 10; made up of three basic units meter, grams, and liter.
2. the portion, or ratio, of the active strength ingredient to the whole drug product.
3. A measure of time based on a 24 hour clock in which midnight is 0000, noon is 1200, and the minute before midnight is 2359; also referred to as 24 hour time.
4. A mathematical system in which numerical values are expressed in either capital or lowercase letters.
5. Switching the numerator with the denominator in a ratio
6. Two ratios that have the same balie; for example ½ and 4/8
8. The amount of space occupied by a medication in a sterile vial, used for reconstitution; equal to the difference between the total volume and the volume of the diluting ingredient, or the diluent volume.
13. A comparison of numeric values.
16. The last recommended date for admnistration provided by a compromising facility.
18. The action of hand-preparing a new pharmaceutical product by mixing, combining, or integrating ingredients; the resulting prepared product, which can be sterile or nonsterile.
19. A comparison of equal ratios; the product of the means equals the product of the extremes.