Which material is best at resisting corrosion?
Which chemicals produce the most corrosion on a particular material?
Which type of fabric survives repeated machine washing the best?
Compare the strengths of various types of paper towels.
Compare the effectiveness of different types of sunscreen products.
What processes can increase the strength of metals?
Which type of wood burns the most slowly? Which produces the most heat when burned?
Which type of glue is strongest?
How does the shape of a material affect its strength? For example, which is stronger... a wooden dowel, I-beam, U-beam, etc. of a certain length and weight?
Examine how things break. Do they break in a predictable manner that you can model?
How is the bond of adhesive tape affected by temperature?
What type of flour produces the fluffiest muffins?
How do you make a strong rope using hair? Is it better to lay fibers side by side or wrap them into a bundle or... ?
What materials resist fire the best?
What household materials are effective anti-friction lubricants?
What type of water filter removes the most impurities?
