Science : Ages 11 to 12 : Pure and Impure Substances

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Secondary Science Resources

Click through for free science resources for secondary teachers and pupils aged 11 to 12 on the topic of pure and impure substances.

What is a pure substance? video

Everyday scientists Bethan and Tariq explain what pure and impure means in a scientific context, and investigate the purity of water - from a bottle, from the tap... and in caves!

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 

 

 


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Compounds and mixtures video

What's water made of? Discover the difference between an atom and a molecule and learn all about mixtures and compounds in an everyday kitchen setting. 

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 

 

 


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Dissolving video

How do substances dissolve? This video gives a clear explanation including animations and real-life examples. It can stand alone or introduce a practical looking at the best temperature to dissolve sugar. 

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 

 

 


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Diffusion video

How does the smell of a baking cake reach your nose? Bethan and Tariq explore diffusion. 

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 


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Filtration video

Discover real-world examples of filtration in action around the house - and how new technology is taking filtration into the twenty-first century!

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 

 

 


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Evaporation video

A sweaty top gets Bethan and Tariq, our everyday scientists, thinking about evaporation. The video includes clear animations and real-world examples. 


Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 


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Distillation video

How would you survive if you were stranded on a desert island? Tariq and Bethan investigate distillation and build a solar still.

 

Where's the Science in that? The Home puts science in a real-life context and gives students aged 11 to 14 a better understanding of how STEM applies to everyday life. 

 

 


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Fractional distillation video

What goes on inside a fractionating tower? Discover how crude oil gets separated to make all the useful products we us every day.

 

Where's the Science in that? The Home puts science in a real-life context and give students aged 11 to 14 a better understanding of how STEM applies to everyday life. 


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Chromatography video

Explore chromatography through the medium of cake with everyday scientists Tariq and Bethan. 

 

Where's the Science in that? The Home puts science in a real-life context and give students aged 11 to 14 a better understanding of how STEM applies to everyday life. 


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Dissolving Solids activity video

Where's the Science in that? The Park offers secondary students a range of activity videos focusing on a selection of key Science topics. The videos introduce the topic and set students a practical challenge. Teachers' notes are provided.  


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