PRESENTATION OUTLINE
QUESTION
- If bleach is used to change the colour of clothes what does it do to
- other house hold objects.
HYPOTHESIS
- We think that the vinegar will turn into chlorine vapour,
- The tooth pick will dissolve, the raw apple will dissolve,
- The pin will stay the same and the cloth might change colour.
MATERIALS
- Cloth, a pin, vinegar, raw apple, tweezers, bleach
- Rubber gloves, apron, test tubes, safty goggles, container
METHOD
- Pour half a cup of bleach in a container
- Then dip each subject witha pair of tweezers into the bleach.
- Then place each one in a test tube and see what are the reactions.
Results
When we dipped each object into the bleach we at first did not get much of a reaction though later on the results were
Part of the pin had been dissolved, the rotten bits of the apple had been wiped clean off,as expected all the colour of the cloth had been drained out of it, the tooth pick seemed to have not been affected at all.
Results
It was the exact opposite with the vinegar for as soon as it was poured in a definite smell of chlorine began to waft around the area, this meant that the toxic chlorine vapour had been released a bit, luckily Myles had a gas mask on.
Conclusion
Our hypothesis in some parts was right and in others wrong as some of the objects did not react the way we expected like with the pin which had dissolved a bit. The thing with bleach is that is a great disinfectant which is why the rotten bits of the apple had been wiped off, what bleach is is chlorine mixed with sodium which makes it into the extremely strong sodium hypochlorite which gives it it's powers of dissolving. It's dying power comes from chromophores a which absorb light at specific lengths to make any object absorb the the different colours.