When a chemical change occurs... What happens

Atoms are rearranged
The law of conservation of mass is always obeyed
The chemical properties of new substances are different from the ones you started without
All of the above

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

part 1: which substance has a higher solubility?

a

smallest amount left undissolved atall temps in table shown most has dissolved high sol'by