1. How might the container of an oral powder differ from that of a topical powder?

2. A solid powder has a true density of 1.77 g/cc. A 20.0-mL sample of this powder weighed 37.65 grams. Calculate the true volume.

3. A solid powder has a true volume of 8.4 mL. A 35.00-g sample of this powder had an experimental, bulk volume of 18.1 mL. Calculate the true volume.

4. Angle of repose will be affected by the size and shape of the particles.

True

False

5. Apparent density and bulkiness can be determined in the laboratory using a FitzMill comminutor.

True

False

6. Particles classified as course would pass through larger sieve numbers (smaller openings) than fine particles.

True

False

7. Powders with smaller values for angle of repose will flow more freely than powders with larger values.

True

False

8. Sieve analysis is used to determine and compare the apparent density to the true density of a powder.

true

false