Give an example of a situation where a color change occurs, but not because of a chemical reactions?

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

In a chemical reaction at equilibrium, the rate of the forward reaction the rate of the reverse reaction. if the rate of the forward reaction more products are formed.

What is the main reason why some developing countries fear the increase the free trade policies around the world?