All Acids and bases articles – Page 9
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The MoleUsing 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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ResourceOn 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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ResourceOn 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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ResourceOn 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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FeatureMicroscale 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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Resource28 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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Resource45 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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Resource28 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 chemistryDissolving copper in nitric acid
The dramatic reaction between copper and nitric acid ought to be seen
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FeatureThe discovery of fluorine
The hazardous nature of hydrogen fluoride brought agony and death to investigators during early attempts to isolate fluorine
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The MoleNational Treasure: can lemon juice and hot breath reveal invisible ink?
On screen chemistry with Jonathan Hare
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Exhibition chemistryThe ammonia fountain
Demonstrations designed to capture the student's imagination
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The MoleCitric acid
When you squeeze lemon juice over your pancakes this Shrove Tuesday, you will be using citric acid – 2-hydroxypropane-1,2,3-tricarboxylic acid. This molecule has a host of applications, making it quite a magnificent molecule
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Exhibition chemistrySoap from bacon - the dangers of alkaline solutions
Demonstrations designed to capture the student's imagination
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Lesson planReactions of acids with metals and carbonates | 11-14 years
Help your students unravel misconceptions about how acids react with metals and carbonates via this lesson plan with downloadable activities for ages 11–14.
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Lesson planWhat are the effects of acid rain? | 11-14 years
Try this lesson plan for 11–14 year olds to investigate the effects of acid rain on metals and carbonate rocks through field work and an experiment.