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Testing For Alcohol

Testing For Alcohol. Noadswood Science, 2012. Testing For Alcohol. To be able to describe the tests for alcohol. Drink Driving. Drink driving in the UK accounted for 280 deaths in 2011, with 9,990 injuries…

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Testing For Alcohol

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  1. Testing For Alcohol Noadswood Science, 2012

  2. Testing For Alcohol • To be able to describe the tests for alcohol

  3. Drink Driving • Drink driving in the UK accounted for 280 deaths in 2011, with 9,990 injuries… • Although this number has fallen considerably since the late 1970’s, this number is still unacceptably high…

  4. Drink Driving – Awareness

  5. Drink Driving – Awareness

  6. Drink Driving – Awareness

  7. Drink Driving – Awareness

  8. Drink Driving – Awareness

  9. Drink Driving – Awareness

  10. Alcohol Test • It is illegal in the UK to drink and drive – the amount of alcohol in measured using a breathalyser which uses a chemical based test to detect the presence of ethanol on a suspect’s breath… • The original breathalysers used a plastic bag with specific chemicals in there to detect the ethanol • Modern breathalysers use a similar test, but give a digital read-out (though accuracy still isn’t 100%, so suspects are taken to the police station for more accurate tests…)

  11. Alcohol Test • Acidified potassium dichromate solution is orange • When ethanol is added the solution goes green • This simple colour change shows the presence of ethanol

  12. Alcohol Test • Method: - • Suspect asked to blow into the tube • Potassium dichromate crystals are contained in a small chamber, mixed with sulfuric acid • Any ethanol reacts with the potassium dichromate, turning it green – this is then compared with the un-reacted sample • If there is a significant colour change the suspect has failed the test

  13. Poster • Make your own hard impact poster explaining both the dangers of drink driving and how the police will catch you if you do drink and drive (the science behind a breathalyser)…

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