A cool experiment with a testable hypothesis is testing an apple and if it will be able to oxidize in different temperatures with the inside exposed to Oxygen.
Hypothesis: If the cut piece of an apple is exposed to warm air then the apple will turn brown and oxidize faster than a cut piece of apple in a cooler temperature.
Supplies: Three thermometers, An apple, an apple cutter, a plate, etc.
Directions place the three thermometers in a cool cold area,