All Applications of chemistry articles – Page 16
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ResourceOn This Day – Jul 14 : Sir William Perkin died
He synthesised the first artificial dyestuff, called mauve or aniline purple, while trying to synthesize quinine from a coal tar chemical. Perkin commercialised his discovery, developing production methods and uses for the new dye.
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ResourceOn This Day - Oct 13 : First zinc oxide
The Pennsylvania and Lehigh Zinc Company Mill produced zinc oxide (ZnO) from calamine ores. Zinc oxide is a white powder that is used as an additive to a wide range of products such as paints, plastics, adhesives, fire retardants and foods (nutrients).
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ResourceOn This Day - Jun 03 : Emmet Culligan died
He invented the Culligan water softener system that made water softening available to home users. These systems reduce the amount of calcium (Ca), magnesium (Mg) and other metal cations found in hard water. He founded the Culligan international water treatment products company in 1936.
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ResourceOn This Day - Nov 03 : Antifouling paint patent
It was made from a mixture of a copper oxide (CuO), tar and naphtha, and offered protection against growth of barnacles and seaweed for twelve months. There are now concerns that copper oxide based antifouling paints are environmental pollutants, and replacements are being introduced.
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ResourceOn This Day - Oct 02 : First atomic clock
Atomic clocks keep time using the microwave signal that is emitted when electrons in atoms change energy levels. This early clock, the Atomicron, used the constant frequency from the oscillations of the caesium (Cs) atom at 9,192,631,830 MHz.
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Lesson planHow was the first artificial dye made? | 16-18 years
Explore organic synthesis and the making of the first artificial dye, mauve, in a lesson plan and directed activity related to text (DART) for 16–18 year olds.
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Lesson planInvestigating the chemistry of how fireworks work | 14-16 years
Explore the principles behind fireworks and what makes the different colours we see when they go off using this lesson plan with activities for 14–16 year olds.
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Lesson planUsing a survey to learn what shampoos people use | 11-14 years
Collect and analyse data from surveys, exploring differences between subjective and objective data, using this lesson plan with activities for 11–14 year olds.
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Lesson planHow do shampoos work? Hair care, acids and bases | 14-16 years
Test shampoos and investigate their ingredients as an application of acid–base chemistry using this lesson plan with practical activities for 14–16 year olds.
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Lesson planWhat are chemical reactions used for? | 11-14 years
Try this lesson plan for 11–14 year olds to explore how chemical reactions are used to produce energy, make new materials or support biological systems.
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ResourceShampoo and the chemistry of hair care
Discover experiments, a survey and other activities to teach 11–16 year olds about surfactants and acid–base chemistry in the context of hair care and shampoos.
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ResourceCleaning chemistry: soaps and detergents
Discover practical experiments, investigations and other activities for 11–16 year olds to explore the chemistry of cleaning products like soaps and detergents.
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ResourceThe chemistry behind fireworks
Discover practical experiments, a DART and other activities for 11–16 year olds, exploring key chemical concepts in the context of fireworks.