Doubling the size of a load resistor increases the load current. Increasing the load resistance, in turn the total circuit resistance is reduced. The load current would not be half as much since when you increase the size of load resistor then load current increases.
The chocolate softens and melts as it absorbs the microwaves, and it makes a mess.
Circular motion is what an object has if it is moving around and around and around and around and around and around and around and around and around in a path that is a circle.
Kinetic Energy is movement energy (most simplistic way I can put it) so its motion.
A physical change in something doesn't change what the it is. For example, if you break glass, it will still be glass. In a chemical change where there is a chemical reaction, a new thing is formed and energy is either given off or absorbed. For example, when you burn a log. The carbon in the log is reacting to the oxygen to create ashe and smoke
