Does anyone know any simple non-toxic science experiments?

Question

I am reposting this because I still haven't found the "best answer."

I have already done vinegar and baking soda, floating raisins, made a cornstarch suspension. The experiment has to be done in under 20 minutes and I can't use a stove or microwave. The experiments have to be nontoxic in case the students eat it.

It is for a General Science Special Education classroom. The experiment can't include toxic materials, glass, or fire. Again, I can't use fire, glass, or toxic materials in the experiment. It has to be done in under 20 minutes and preferably use materials that are easy to get.

Answer 1

Can you use pepper and soap to show that when you dip the soap in the water, it repels the pepper because of the charges of soap as a base?

Can you fly paper airplanes vs. trying to throw a flat sheet of paper across the room to demonstrate air resistance?
If you pick two different models, you could show which design is more aerodynamic. Go to the library or look online for simple instructions for folding paper planes. Sometimes adding a paper clip adds momentum without adding resistance.

Answer 2

If you want to take the time to do this, you can make ice balloons in your freezer (or in the freezer at school,) and then give each student an ice balloon. Have them observe how fast the ice melts when you put sugar on top of it, as opposed to when you put salt on top of it. When we did this in my science methods course a few weeks ago, we used food coloring too, so we could see how fast the ice was melting. I hope that helps.

emo

Answer 3

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