Answer:
Science fair always has experiments which prove science concepts. Students will bring apparatus or an lab items and show experiments as a magic. There are only certain things which a Science can prove and show to other.
From the given question, the following can be proved:
- Does pressure have an effect on the volume of a gas?
- Which brand of soap is the best for cleaning grease off dishes?
- Which laboratory experiment is the most fun to perform?
The below cannot be proved but can be explained
- Is the information on the periodic table difficult to understand?
- Which physicist was the smartest?