What is Diffusion? How Does it Work? What Factors Affect it? #7

This video covers
- What diffusion is
- How it works
- How it applies to cell membranes
- The 3 factors that affect the rate of diffusion (concentration gradient, temperature, surface area)
Exam board specific info:
KS3
All relevant to KS3 course
GCSE
AQA - All on your course
IGCSE Edexcel - All on your course
Edexcel - All on your course
OCR 21st Century - All on your course
OCR Gateway - All on your course
A-level
If you're doing A-level biology you also need that longer diffusion distances will decrease the rate of diffusion because the particles have to travel further.
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

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If you’d like to practise what's covered in this video, check out the lesson on our platform: cognitoedu.org/coursesubtopic/b2-gcse-aqa-h-t_1.07 - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
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[@farhanadewan5937]

Hi, I had a question, since you said diffusion happens when particles move from a high concentration to where there is a low concentration, is it possible that almost all the particles try to move to a low concentration area at once, making that area concentrated? And then, does this process repeat, with the particles going back to now low-concentration areas?

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No the particles move from a higher concentration to a lower concentration until the concentration is balanced on both sides

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