Aluminum oxide is an ionic substance with formula al2o3. explain what this formula means.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.