All Acids and bases articles – Page 8
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The duck pond problem
Learn more about how humans can affect the environment, and how chemistry can be used to help it in this practical. Includes kit list and safety instructions.
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Technician in trouble! What solutions are which?
Investigate different chemical solutions with this experiment that explore reactions of acids and alkalis, as well as neutralisation. Includes kit list and safety instructions.
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Making your own indicator
Explore acids, alkalis, and dyes with this classroom practical. Includes kit list and safety instructions.
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Lift Oxo cubes to dizzy heights
Explore how creating carbon dioxide from reactions can be harnessed to lift objects in this classroom experiment.
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Indicator puzzle
Discover the pH of different solutions by using plant based natural dyes in this practical. Includes kit list and safety instructions.
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Funny felt pens
Find out how colour changing pens work in this practical into acids and alkalis in inks. Includes kit list and safety instructions.
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Colour creation
Blue and red make purple, but what makes blue? Discover how acids and alkalis indicate with different colours in this practical. Includes kit list and safety instructions.
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Building a chemically powered boat
Put junk material to good use, and create a gas powered boat, to explore CO2 production. Includes kit list and safety instructions.
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Textile conservation
Anita Quye explains how to look after fragile fabrics for future generations
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Paper conservation
History is written on paper and chemistry is at the heart of paper conservation
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The Mole
Using chemistry to turn ‘water’ into ‘wine’
Learn how iron(III) oxide and potassium thiocyanate can be used to turn ‘water’ into ‘wine’, and try a similar experiment yourself using household ingredients.
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On This Day - Feb 22 : Johannes Brønsted was born
Brønsted developed an identical definition of acids and bases simultaneously but independently from English chemist Thomas Lowry in 1923. Acids are recognised by an excess of H+ ions, and bases have an excess of OH- ions.
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On This Day - Nov 17 : Nicolas Lemery was born
His research focus was in the area of acid-base chemistry, but he also prepared a comprehensive dictionary of pharmaceuticals and wrote a chemistry textbook Cours de chymie (1675) that had 31 editions by 1756!
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On This Day - Jan 09 : Søren Sørensen was born
He developed the pH scale (which ranges from 0-14) at the Carlsberg Laboratory in Denmark. This was the first time that the negative logarithm of proton (H+) concentration was used as a measure of acidity.
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Microscale chemistry revisited
Microscale techniques are unlikely to replace our traditional approach to chemistry education, but they do provide an extra dimension to our teaching strategies
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28 chemistry puzzles for 14-16 years
Use these sudoku-inspired puzzles with printable worksheets and answers to help 14–16 year olds consolidate their understanding of key chemical concepts.
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45 chemistry puzzles for 16-18 years
Try these chemistry puzzles based on sudoku to help 16–18 year old students consolidate their knowledge about key topics, with printable worksheets and answers.
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28 chemistry puzzles for 11-14 years
Try these sudoku-style chemistry puzzles for 11–14 year olds to reinforce your students’ understanding of key ideas, featuring printable worksheets and answers.
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Exhibition chemistry
Dissolving copper in nitric acid
The dramatic reaction between copper and nitric acid ought to be seen