Uploaded March 2024 | Updated September 2026, 1 hour ago
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In this video, we use the simple particle model to describe how the particles are arranged in solids, liquids and gases and how this arrangement changes during melting, freezing, boiling and condensing. We then look at why some substances have higher melting and boiling points than others. Finally, we look at the limitations of the simple particle model.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Chemistry. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Candle
commons.wikimedia.org/wiki/File:Candle_black.jpg
Candle.jpg: Banginderivative work: Setreset, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Sodium chloride
commons.wikimedia.org/wiki/File:Chlorid_sodn%C3%BD.JPG
Ondřej Mangl, Public domain, via Wikimedia Commons
Find your 9s with PLUS. Click the link to try for free freesciencelessons.co.uk/modules/gcse-chemistry-1-triple
Teachers, to get PLUS for your school, email schools@freesciencelessons.co.uk
In this video, we use the simple particle model to describe how the particles are arranged in solids, liquids and gases and how this arrangement changes during melting, freezing, boiling and condensing. We then look at why some substances have higher melting and boiling points than others. Finally, we look at the limitations of the simple particle model.
This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Chemistry. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits:
Candle
commons.wikimedia.org/wiki/File:Candle_black.jpg
Candle.jpg: Banginderivative work: Setreset, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
Sodium chloride
commons.wikimedia.org/wiki/File:Chlorid_sodn%C3%BD.JPG
Ondřej Mangl, Public domain, via Wikimedia Commons
