CLEAPSS Supporting practical science and technology
CLEAPSS Resources
Latest Resources
Search For:
Showing results 1 to 10 of 483
1 234

Members only resource Click to download Document.
The Landolt method (potassium iodate(V) and sodium metabisulfite) was the first iodine clock reaction described, and can be used for a simple two-reagent investigation.
words matched: clock, reactions

Members only resource Click to download Document.
Iodine clock reactions produce iodine, which reacts with starch to give the distinct blue/black colouration. The iodide-persulfate method is one of the simplest clock reactions, involving simple kinet.. more
words matched: clock, reactions

Members only resource Click to download Document.
The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The Harcourt-Essen method is useful as the reaction kinetics .. more
words matched: clock, reactions

Members only resource Click to download Document.
Various monitoring techniques can be used to investigate how different factors affect the rates of reactions. The thiosulfate-acid ‘disappearing cross’ activity is an example of a clock reaction with .. more
words matched: clock, reactions

Members only resource Click to download Document.
The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The 'disappearing pink' method provides an alternative to iod.. more
words matched: clock, reactions

Members only resource Click to download Document.
Small scale 'disappearing cross' methods for investigating the effect of concentration on the rate of the sodium thiosulfate - acid reaction. Includes use of an alkaline 'stop-bath' to neutralise used.. more
words matched: clock, reactions

Members only resource Click to download Document.
Brief risk assessment guidance and experimental notes for a range of activities involving (oxidising) ammonium salts (Hazcard 8).
words matched: clock, reactions

Free resource Click to download Video.
Iodine clock reaction - Iodide persulfate method
words matched: clock, reactions

Free resource Click to download Video.
Bromine clock reactions: disappearing pink
words matched: clock, reactions

Free resource Click to download Video.
Iodine clock reaction - Landolt method
words matched: clock, reactions

Showing results 1 to 10 of 483
1 234