5. A scientist has a container with a substance inside. At first, the molecules in the substance move
away from each other. Later, the molecules move around each other. What change did the scientist
observe in the substance?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

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?

How to calculate the mass of copper