What is diffusion GCSE answer?
What is diffusion GCSE answer?
Diffusion is the random movement of a substance from a region of high concentration to a region of low concentration (ie: down the concentration gradient). For example, oxygen moves from a high concentration in the lungs to a low concentration in the blood.
What is diffusion GCSE AQA?
Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement of particles from an area of higher concentration to an area of lower concentration.
What factors affect the rate of diffusion GCSE?
The rate of diffusion
| Factor | How the factor affects the rate of diffusion |
|---|---|
| Concentration gradient | The greater the difference in concentration, the quicker the rate of diffusion |
| Temperature | The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly |
What is diffusion BBC Bitesize?
Diffusion is the movement of a substance from an area of high concentration to an area of lower concentration . Diffusion occurs in liquids and gases when their particles collide randomly and spread out.
How does diffusion work GCSE?
Diffusion is when particles spread from an area of high concentration to an area of low concentration. The molecules would move randomly, and they would eventually become evenly distributed. The particles move down the “concentration gradient” and this process takes no energy (it’s a “passive” process”).
What makes diffusion faster?
The greater the difference in concentration, the quicker the rate of diffusion. The higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly. The greater the surface area, the faster the rate of diffusion.
Does diffusion require energy?
There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.
What are the 3 examples of diffusion?
Example of diffusion
- The smell of perfumes/Incense Sticks.
- Opening the Soda/Cold Drinks bottle and the CO2 diffuses in the air.
- Dipping the tea bags in hot water will diffuse the tea in hot water.
- Small dust particles or smoke diffuse into the air and cause air pollution.
What factors affect diffusion?
Several factors affect the rate of diffusion of a solute including the mass of the solute, the temperature of the environment, the solvent density, and the distance traveled.
What does diffusion depend on?
The diffusion rate depends on several factors: the concentration gradient (the increase or decrease in concentration from one point to another); the amount of surface area available for diffusion; and the distance the gas particles must travel.
