What does ‘weak’ mean in terms of the number of ions and molecules in asolution of a weak acid? Look up any monoprotic (monobasic) weak acid in a data book. Starting from its Ka (or pKa) value, calculate or find as much information as you need to show what is meant by ‘weak’ in weak acid.
Make your own sunscreen and determine its SPF using UV light transmission
Investigate the relationship between the concentration of calcium ions and the ‘hardness’ of water
This forensic science project uses chemical analysis and observation skills to investigate a crime and solve the case
Find out about the discovery and use of aspirin with this research and presentation task for groups of 16–18 year-old learners
Explore the use of painkillers and their other effects: antipyretic, anti-inflammatory and antirheumatic. Includes kit list and safety instructions.
Heat, react, convert and separate oil of wintergreen to create 2-hydroxybenzoic acid. Includes kit list and safety instructions.
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