I made another mistake.
THe independant variables are:
- size of copper pipe portion
- amount of solution
- ingredients in solution
- time
- container
- location
The dependant variable:
- the amount of rust
Whoops I know I am very careless
For mearsuring rust I think I will still do it by measuring the weight of the copper pipe before and after the experiment. I can't easily control the variables when scraping the rust off or looking at the rust and deciding which has more by my eye. This wouldn't be a fair test.
I think I might have to use some special scale that hopefully the school has but I'll check on it and write what I will use, tomorrow
But Bye for now
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