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The Gas State

These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to predict the possibility of the gas state with the particle model and understand that ‘gases’ are substances which happen to have boiling points below room temperature.

The gas state is a mystery to most students. Many do not think of ‘gases’ as being substances in the same way as those appearing in the solid or liquid states at room temperature. Common misconceptions for boiling water are that the big bubbles are air or hydrogen and/or oxygen and that the mist above is water in the gas state. The particle animations can be used to predict the possibility of the gas state and a video shows a drop of water turning to a clear body of gas. The ideas can then be applied to boiling water. The idea of substances having a boiling point is established and that some substances have boiling points below room temperature. Videos of putting a lighted splint to methane, nitrogen and oxygen show very different behaviours of what look to be the same.

These video and animation files form part of the resources in the section The Gas State in the Stuff and Substance multimedia package, which provides a series of interactive pages that can be used by teachers or students in the classroom.

Please note: From 2021, Adobe has discontinued support for Flash player and as a result some interactive files may no longer be playable. As an alternative method to accessing these files a group of volunteers passionate about the preservation of internet history have created project Ruffle (https://ruffle.rs/). Ruffle is an entirely open source project that you can download and run many interactive Flash resources. For further information regarding STEM Learning’s policy for website content, please visit our terms and conditions page.

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Download all files as a .zip41.47 MB
Information on the permitted use of this resource is covered by the Category Three Content section in STEM Learning’s Terms and conditions.
Subject(s)Science, Chemistry
Age11-14
Published2000 - 2009
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Direct URLhttps://www.stem.org.uk/rxvp3

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