Which answer best defines physical property

All forces cause motion? true or false

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.