I am a seventh grader and i need to find a science project. It needs to have ONLY ONE changing variable. It also needs to be easy to do. And i need to to be UNIQUE, which is why this is so hard. It can't be something as popular as "Does the amount of salt affect the freezing point of water?" PLEASE HELP NOW!!!!! It also needs to be an EXPERIMENT! It cannot be an invention!!What is a good 7th grade science experiment/project with 1 changing variable?
Something on osmosis, Does the size of potato chips effect the amount of water taken in?
yes it does... thinking of it now, iots actually quite boring, but jus an idea.
(cut potato into different sizes put in salt water and then weigh before and after, you can add dye to the solution to make it more interesting)
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