Available onlineStates of matter
(page 3 of 3)Part of an online exhibition created by The Science Faculty in conjunction with the OUDA Project Team in 2014
| Clip 9: | The types of energy that hold molecules together |
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| Duration: | 00:00:23 |
| Date: | 1971 |
| Clip 10: | A demonstration of Brownian motion |
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| Duration: | 00:02:28 |
| Date: | 1971 |
Clips 9 and 10 are from S100 programme 5 “Science course unit 5.”
Clip 9 includes an explanation by Professor Elliott of how kinetic energy and binding energy hold molecules together.
View clip 9
Clip 10 shows a demonstration of Brownian motion. The random movement of pollen grains in a suspension is seen through a microscope. The motion is due to the random impact of millions of atoms or molecules on relatively large particles (now called Brownian motion). This is followed by a mechanical analogy using pucks on an air-table showing the underlying reason for the random motion of the particles.
View clip 10
Today the Open University offers free learning resources around this topic. You might want to explore the following OpenLearn resources:
Solid, Liquid, Mash - Why deciding what's liquid isn't that simple
