Definition: Osmosis is defined as the diffusion of water molecules through a partially-permeable membrane.

Highlight: Temperature's effect on diffusion is explained through increased kinetic energy leading to faster particle movement.

Example: The radiator and sock example demonstrates how higher temperatures increase the rate of diffusion.

Vocabulary: Important terms include kinetic energy, equilibrium, and concentration gradient.

Definition: A partially-permeable membrane is defined as a barrier that selectively allows certain molecules to pass through.

Highlight: The relationship between solution concentration and water molecule movement is emphasized.

Vocabulary: Key terms include dilute solution, concentrated solution, and partially-permeable membrane.

Example: The page illustrates the movement of water molecules between pure water, dilute solutions, and concentrated solutions.

Definition: Diffusion is the spreading out of particles from a high concentration to a low concentration area through passive transport.

Example: A practical demonstration is provided through the example of a smelly sock, where odor molecules diffuse through the air, spreading from their source.

Highlight: Diffusion is specifically identified as a passive process, meaning it requires no energy input to occur.

Vocabulary: Key terms introduced include concentration gradient, passive transport, and particle movement.