procedure: 1. cut 10 by 10 cm squares of denim fabric 2. in plastic cups we prepared dilutions of six different strengths of bleach 3. we recorded the time that denim was submerged 4. withdraw the denim squares 5. rank the amount of colour loss 6. record data on a data table
data bleach / water / rank 100% bleach / 100 ml / 0 ml / 10 3/4% bleach / 75 ml / 25 ml / 8 1/2% bleach / 50 ml / 50 ml / 6 1/4% bleach / 25 ml / 75 ml / 4 1/8% bleach / 12.5 ml / 87.5 ml / 2 0% bleach / 0 ml / 100 ml / 0
analysis and conclusion: the experiment supports the hypothesis that if the original bleach solution is diluted repeatedly with water the bleach effect did lessen as the concentration decreases
Question and/or Problem:cant put stones in washing machine so how do we make stone washed jeans
ReplyDeletehypothesis: water will do nothing and bleach will remove most of the colour
ReplyDeletematerials: goggles beakers denim cups bleach stopwatches water forceps
ReplyDeleteprocedure: 1. cut 10 by 10 cm squares of denim fabric
ReplyDelete2. in plastic cups we prepared dilutions of six different strengths of bleach
3. we recorded the time that denim was submerged
4. withdraw the denim squares
5. rank the amount of colour loss
6. record data on a data table
data bleach / water / rank
ReplyDelete100% bleach / 100 ml / 0 ml / 10
3/4% bleach / 75 ml / 25 ml / 8
1/2% bleach / 50 ml / 50 ml / 6
1/4% bleach / 25 ml / 75 ml / 4
1/8% bleach / 12.5 ml / 87.5 ml / 2
0% bleach / 0 ml / 100 ml / 0
analysis and conclusion: the experiment supports the hypothesis that if the original bleach solution is diluted repeatedly with water the bleach effect did lessen as the concentration decreases
ReplyDeletereference:
ReplyDelete''inquiry and investigation''
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