All Compounds and mixtures articles – Page 2
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FeatureHow ice cream is made
For a simple combination of milk, cream, sugar and flavourings, there is a lot of science involved in ice cream manufacture
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ResourceSeparating caffeine | 11–14 years
DART (Directed Activity Related to Text) covering separation techniques, including dissolution, distillation and filtration. Decaffeination provides a great context to add depth to a sequence of lessons on separation techniques.
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NewsThe exceptional alloy that’s resisting corrosion
Could stainless magnesium replace aluminium in cars and aeroplanes? This calcium–magnesium alloy has implications for carbon emissions
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PosterThe science of melting chocolate
Use this infographic with your 11–14 students to develop their knowledge of changes of state and their graphing skills
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PracticalConservation of mass | practical videos | 14–16 years
Video and supporting resources for two practical experiments exploring conservation of mass.
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ResourceChalky spinach
How does the food we eat affect our bodies? Discover the acid inside spinach, and why it can feel chalky
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ResourceLithium: separation, mining and battery power | 11–14 years
Test your 11–14 students’ knowledge of separation techniques; elements, mixtures and compounds; periodic table trends
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ExperimentHow to purify water
Explore the water cycle, and see how it can be used to purify your own water. A perfect experiment for the classroom, or at home, with kit list and safety instructions included.
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ResourceRunaway reactions
Ask your 16–18 students to take a closer look at ammonium nitrate and enthalpy
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FeatureLending a hand with sanitiser
When one of the key weapons in the fight against Covid-19 was in short supply, some unlikely manufacturers stepped in
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ResourceHand sanitiser in demand – reading comprehension
Discuss the real life application of mixtures and formulations with your 11–14 students with this reading comprehension exercise
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ExperimentKitchen roll chromatography
Coloured inks can be a mix of a few different colours, and with chromatography, learners can actually see which colours come together to make that coloured ink. This experiment includes a kit list, and safety instructions.
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Exhibition chemistryWhen life gives you lemons (or oranges)
Teach your students about volatile organic compounds with these juicy demonstrations
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CPDHow to teach conservation of mass
Help students navigate the law of conservation of mass on dissolving and heating
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ResourceConservation of mass on dissolving and heating
Help students understand how mass is conserved when a substance is dissolved or heated
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ResourceFinding out how much salt there is in seawater
Use the microscale titration apparatus to titrate silver nitrate solution against sea water
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ResourceThe reaction between zinc powder and sulfur
A spectacular practical demonstration to show the differences between elements, mixtures and compounds
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ResourceSeparating mixtures | Primary science video demonstrations
Fun demonstrations of different mixtures, including racing liquids and rainbow colours.
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ResourceOlympic composites (primary level)
Find out what composites are made up of and why they are so important sporting equipment for the Olympics.