English National Curriculum - Science Science

3. Explain diffusion in terms of the particle model

Mission Objectives

Explain the underlying principle of diffusion

Create a model to visualise diffusion

Explain how diffusion can be accelerated by temperature

Rocket Words Quiz

See if you know all the meanings of the rocket words

Assessment Quiz

Test your knowledge of this lesson

Word Search Game

Find all the rocket words in the grid

Lesson Resources

Lesson Plan

View and print the lesson plan

Downloads

Save files related to this lesson

KS3-06-03 Handout KS3-06-03 Handout PDF

Keywords

Words and meanings to learn

random movement

also known as random motion, this is the spontaneous and unpredictable movement of particles or objects that results from their thermal energy

diffusion

the process by which particles or substances spread from areas of higher concentration to areas of lower concentration; it occurs as a result of random thermal motion of particles, and it is driven by the difference in concentration between two regions

concentration

the amount of a substance present in a given volume or weight of a mixture or solution

concentration gradient

the difference in concentration between a region of a solution or gas that has a high concentration of particles and a region that has a relatively lower concentration of particles

collision

when two molecules bump into each other

This lesson has been written by

Dr Shannon Weldon

Shannon started her journey with Developing Experts by completing PHD placement while studying for her Doctorate in Developmental Biology at the University of East Anglia. Shannon has since joined the team full-time as a Project Manager working with the company's industry partners. Shannon knows a lot about chickens!

Dr Peter Klappa

Peter Klappa studied Biology (BSc Hons and MSc) at the Ludwigs-Maximilian University in Munich, Germany, where he also obtained his PhD in molecular and cellular biology. He is a National Teaching Fellow and a Senior Fellow of the Higher Education Academy. As a trained Biology and Chemistry teacher, Peter has taught sciences for over 30 years, both at pre- and post-entry to university. For his excellence in teaching, Peter has received numerous awards and prizes and was nominated for the Teacher of the Year award by the Higher Education Academy in 2015 and 2019.

Required Resources

Resources: Glass jars or beakers, food colouring, water, droppers and timers.

Core Handout: A sheet to support the Mission Assignment activity. 

Warning: You are now leaving Developing Experts.

These links are being provided as a convenience and for informational purposes only; they do not constitute an endorsement or an approval from Developing Experts of any of the products, services or opinions of the corporation or organisation or individual.

Developing Experts bears no responsibility for the accuracy, legality or content of the external site or for that of subsequent links. Contact the external site for answers to questions regarding its content.

You will be redirected to:

Expert film

Mission assignment film

Exemplar Work

View some great examples of student work from this unit

No exemplar works have been uploaded for this lesson yet.

Careers related to this lesson

Operations Support Worker

Nuclear Decomissioning Operative

Nuclear Decomissioning Team Leader

Technical or Production Director

Analytical Technician

Laboratory Quality Control Technician