Powder is described as mixtures of inorganic and organic substances that do not dissolve in water.

Powder is described as mixtures of inorganic and organic substances that do not dissolve in water.

• A. A clear liquid solution
• B. Mixtures of inorganic and organic substances; does not dissolve in water
• C. A homogeneous colloid
• D. A gas with suspended solids

Answer: (B)

Powders are solid particles that, when mixed with water, usually don’t dissolve and stay as distinct particles. That’s why the best description is a mixture of inorganic and organic substances that does not dissolve in water. This highlights that powders are not liquids or solutions, and they don’t form a dissolved, uniform phase in water. They’re also not a homogeneous colloid, which implies a dispersed phase within a medium, typically not just dry solids. And they aren’t a gas with suspended solids. For example, talc powder consists of solid particles and would form a suspension if mixed with water, not a true solution.

Powders are solid particles that, when mixed with water, usually don’t dissolve and stay as distinct particles. That’s why the best description is a mixture of inorganic and organic substances that does not dissolve in water. This highlights that powders are not liquids or solutions, and they don’t form a dissolved, uniform phase in water. They’re also not a homogeneous colloid, which implies a dispersed phase within a medium, typically not just dry solids. And they aren’t a gas with suspended solids. For example, talc powder consists of solid particles and would form a suspension if mixed with water, not a true solution.