Science Experiments?

Question

I am in 9th grade. I need science experiments to do. I am in accelerated science. It needs to be free, and easy. I have already....germ tested, made an oven, done corn starch and water, plaster of paris, and a bunch of others I can't remember. Thanks.

Answer 1

ok

take a plastic bottle and put it in fridge for 20 min.

thn take it out and put a wet coin on its top

u will c the coin dancing becoz of air