All Acids and bases articles – Page 8

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Titration and phosphates in the environment | Chemistry Olympiad worked answers

In association with The Wolfson Foundation

Have a go at a worked example of a Chemistry Olympiad question on the use of titration to determine phosphate levels. Includes video walkthrough and transcript.
Resource
NBC Learn: Chemistry Now

This resource includes both videos and worksheets. The website makes links to everyday contexts in which chemistry is important. This material would provide enrichment to lessons using contemporary chemical examples.
The Mole
Trade secrets... Curdling of soya milk

2014-07-01T11:47:00Z

Secrets of the trade: Jonathan Hare asks why soya milk tends to form hundreds of floating lumps when added to coffee
Resource
Faces of Chemistry – Reckitt Benckiser: Gaviscon

In association with Reckitt Benckiser

Go behind the scenes of the Research and Development department that created Gaviscon.
Exhibition chemistry
Beyond the ‘blue bottle’

2014-05-06T00:00:00Z

Using indigo carmine to produce a range of stunning colours
Resource
Acids and alkalis: problem solving challenges

Develop students understanding of acids and alkalis as well as developing thinking and research skills
Exhibition chemistry
Balls of fire!

2014-01-07T00:00:00Z

Another spectacular demonstration of the dehydrating properties of acid
Resource
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.
Resource
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.
Resource
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.
Feature
Textile conservation

2013-05-01T00:00:00Z

Anita Quye explains how to look after fragile fabrics for future generations
Feature
Paper conservation

2013-03-01T00:00:00Z

History is written on paper and chemistry is at the heart of paper conservation
The Mole
Using chemistry to turn ‘water’ into ‘wine’

2013-01-01T09:20:00Z

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!