Chemistry States of matter Diffusion
Age level: 11-13
- The particles in blue gas A are twice as heavy as the particles in red gas B.
a If gas A was pumped into one jar and gas B was pumped into another jar, would each gas spread through the jar at the same rate? Explain.
b Draw time-lapse diagrams of what you would expect to see if the two gases were pumped into the same container from different ends.
- Why would gases diffuse faster on a warm day than on a cold day?
- a What is diffusion?
b List four examples of diffusion that occur around you every day.
- a Which do you think would diffuse
more rapidly: the particles of a gas or
the particles of a liquid? Use the
particle model of matter to explain
b Why can you can smell food being
cooked on a barbecue from a long
c Spices are often used to improve the
flavour of food. How is this possible?
- What do you observe about the test-tubes
in these photos? Try to explain your
observations by describing what happens
to the particles in the colourless jelly and
the coloured jelly.