In a public pool, Connor held an inflatable ball above his head and then pushed the ball down into the water. Connor could feel the ball pushing up against his hands while he held it steady underwater. After a few seconds, he let the ball go. The ball rose to the surface of the water and floated in the pool. When was the least gravitational potential energy stored between the ball and Earth? Assume that the ball's mass did not change.

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.