State the energy changes that occur in the unwinding of a watch spring.

Energy can exist in several forms and may change from one form to another. For each of the following state the energy changes that occur in : (a) the unwinding of a watch spring. (b) a loaded truck when started and set in motion (c) a car going uphill, (d) photosynthesis in green leaves, (e) charging of a battery, (f) respiration, (g) burning of a match stick. (h) explosion of crackers

State the energy changes that occur in the lighting of a torch bulb.

State the energy changes that occur in the Burning coal while operating a steam engine.

State the energy changes in the following while in use: Burning of a candle.

State the energy changes that occur in an electric generator (or dynamo).

State the energy changes in the following cases while in use : A ceiling fan

State the energy changes in the following while in use: A steam engine.

A change that occurs after a fixed interval of time.

State the energy changes in the following cases while in use : An electric iron

State how the dissociation energy changes with the bond order?