Jill needs to test her pool to make sure it has enough chlorine in it. She put water in her test tube and then added 5 drops of the test solution. The water turned light pink. This indicates a ___. physical change, because color is a physical property. physical change, because the indicator only changed colors slightly. chemical change, because adding the solution caused the unexpected color change. chemical change, because ALL color changes indicate a chemical change.

Ithink ahopefully im correct 

Answerit is not a renewable energy source;

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.