The objective of this experiment is to demonstrate the attractive force between opposite charges. How To Build It First spread some salt and pepper on a flat surface. Make sure that the salt and pepper are not clumped together. Rub the spoon with the wool cloth in one direction only.
Experiment Hold the spoon just barely above the salt and pepper.
Notice how the salt and pepper fly up to the spoon and cling to it. Now clean off the spoon and bring it slowly toward the salt and pepper from a distance. Wipe the spoon again with the wool cloth. Spread the salt and pepper out. Make sure they are not clumping together or stuck to the table.