1. https://www.sciencebuddies.org/science- ... p074.shtml
2. https://www.sciencebuddies.org/science- ... p041.shtml
3. https://www.sciencebuddies.org/science- ... p050.shtml
Are these good experiments for such a hard competition? Any comments or suggestions for other experiments? I'm really interested in astronomy/astrophotography and chemistry if anyone has a good experiment on them! Thanks!

