A powder is a dry, bulk solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms … See more

Typically, a powder can be compacted or loosened into a vastly larger range of bulk densities than can a coarser granular material. When … See more

Many common powders made in industry are combustible; particularly metals or organic materials such as flour. Since powders have a … See more

• Fragile matter
• Granular material
• Liquefaction
• Grain size See more

Powders are transported in the atmosphere differently from a coarse granular material. For one thing, tiny particles have little inertia compared to the drag force of the gas that surrounds them, and so they tend to go with the flow instead of traveling … See more

A paste or gel might become a powder after it has been thoroughly dried, but is not considered a powder when it is wet because it does not … See more