Final Decision

In the las post I think I made a few mistakes so I'm going to fully Explain my experiment now.
The hypothesis of my experiment is that mor acidic washing substances wll cause copper pipes to rust more.
In may experiment I will cut up a copper pipe into a equal portions and place each portion into a tub of solution for 4 weeks. The different solutions will include:
Vingear Solution: 50% Vinegear and 50% water
Bi Carbonate of Soda Soultion: 50% Bi Carbonate of Soda and 50% water
Washing powder Solution: 50% Washing powder and 50% water
The independant variables will be the time frame, the tub size, location amount of solution and the size of the copper pipe.
The depedant variable will the be the different ingrediants in the solution and hopefully the rust
During the experiment I'll take photos. This experiment will take four weeks and instead of doing two other tests afterwards I will do all three of the experiments at the same time because of the time frame. By doing the experiment three times it would more fair and I could get better results. After the experiment is finished I will measure the amount of rust and put the result on a column graph.
But I'm still of thinking of ways to measure rust I have a few ideas. These indclude
- Weigh the copper pipe before and after the experiment
- Scrape the rust off and measure it
- I could visualy decide
I think I'll probably weight the copper pipe before and after the experiment because it is more appropriate and accurate. I wouldn't be able to control my varibales if tried to scrape the rust of because I might scrape too much or little and some dust may still be in the scraper.