Osmosis and Diffusion

Front

What is osmosis?

Back

Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What happens to a gummy bear in salt water?

Back

The gummy bear will shrink because water moves out of the bear into the salt water, which has a higher concentration of solutes.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others.

Front

What direction does water move during osmosis?

Back

Water moves from an area of high concentration of water (low solute concentration) to an area of low concentration of water (high solute concentration).

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What is an example of diffusion in everyday life?

Back

An example of diffusion is the smell of perfume spreading in a room.

Front

What is the effect of temperature on diffusion?

Back

Higher temperatures increase the energy of particles, causing them to move faster and diffuse more quickly.

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of particles.

Front

What happens to a cell in a hypertonic solution?

Back

In a hypertonic solution, water moves out of the cell, causing it to shrink.