This is a fun clock reaction themed around the Olympics suitable for years 9-12 with some serious practical and analytical science skills hidden away.
It involves setting up a clock reaction to target a specific time of of 1'40''.91 seconds Rudisha's 800m World record set at the 2012 London Olympics. It involves low hazard dilute reagents, potassium iodate [0.01M] and acidified sodium bisulfite [0.01M in 0.01M sulfuric acid]. Timings can run from 45-90 min depending on familiarity with burettes.
These burettes are used a s measuring devices to deliver accurate volumes of the reagents and it is a good test of familiarity and accuracy in there use. The participants work in teams of three to trial test systems and obtain times for different compositions. They plot the times as they go along and using the plot (interpolation of a curve) identify an ideal composition to give them the target time.
Then using this composition produce a larger scale reaction system to compete in a final, where all competitors start at the same time and see how close they can get to the target.
Included some editable practical worksheets, and a results sheet. In addition some notes on solution preparation, labels and an example COSHH /RA
It involves setting up a clock reaction to target a specific time of of 1'40''.91 seconds Rudisha's 800m World record set at the 2012 London Olympics. It involves low hazard dilute reagents, potassium iodate [0.01M] and acidified sodium bisulfite [0.01M in 0.01M sulfuric acid]. Timings can run from 45-90 min depending on familiarity with burettes.
These burettes are used a s measuring devices to deliver accurate volumes of the reagents and it is a good test of familiarity and accuracy in there use. The participants work in teams of three to trial test systems and obtain times for different compositions. They plot the times as they go along and using the plot (interpolation of a curve) identify an ideal composition to give them the target time.
Then using this composition produce a larger scale reaction system to compete in a final, where all competitors start at the same time and see how close they can get to the target.
Included some editable practical worksheets, and a results sheet. In addition some notes on solution preparation, labels and an example COSHH /RA
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Just what I was looking for thanks for sharing
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