Liquid experiment

I need an experiment that proves matter exist in a gas, liquid, or solid. Can some one help me?

What is a good, but still fun experiment to do at a Science Fair?

Why might a scientist rerun an experiment if the experment is shown to support a hypothesis.

I Need An Idea For A Science Experiment. I Would Like To Do Something Related To Beauty But I Have No Clue What. Help?

I have to do a short (1-2 sentance) explanation of what it does. Any help?

ii have no idea what do too .! what is the scientific method? what are the steps? and how would I write an experiment using i...

Which of Teslas experiments cannot be exactly duplicated today?

I'm not launching anything in particular so I can't call it "whatever I am launching-pult"

and the name o the most important one and the evidence for this?

I need to write a purpose for doing my experiment, (I tested to see if music affects animal behavior) and im not sure why i d...