heat
When energy changes from one form to another some energy gets turned into work or heat. Due to the laws of thermodynamics you can not complete transfer all energy from one form to another without doing work (letting out or gaining heat).
There isn't really one answer to this. I mean, when ever kinetic energy of an object results in friction with another object, heat is released. Whenever a chemical reaction occurs, heat is released. Whenever photons (light) carrying a certain quantum packet of energy collide with an object, the energy transference results in heat. Electricity can cause fires, so obviously there's heat involved. Sonic energy, nuclear energy, electromagnetic energy, electrochemical energy, really ALL forms of energy can be, and often are converted into thermal energy.
Potential energy is a form of energy that is stored within an object and it can be released or converted into another form of energy. Potential energy is most often associated with restoring forces such as in a spring, which stores potential energy when compressed or stretched.
Mechanical energy is the energy of moving objects, such as the energy that you use when you physically move something with your hand. Obviously, movement is a form of change, it constitutes a change of location or position. Often there is a change of momentum involved as well (as for example when you throw something).
Not necessarily. Quite often, only part of the energy is transferred. Another part may be wasted, or simply remain in its original form. The details really depend on the specific type of energy transfer.
it often changes form.
Some of the energy will usually be converted into an unusable form of energy, often as heat.
No. When there is an energy, there is often also some kind of force involved. However, you should be careful to distinguish the two. An energy is NOT a force, and a force is NOT an energy.
Postcolonial literature often deals with themes of cultural identity
When energy changes from one form to another some energy gets turned into work or heat. Due to the laws of thermodynamics you can not complete transfer all energy from one form to another without doing work (letting out or gaining heat).
The book of the week often changes from one week to another.
Energy flow refers to the transfer of physical energy from one place to another. This often involves the flow of fluid.
Not necessarily - though it depends what you mean by "always". Quite often, energy can remain in the same form for a long, long time.
Bond formation most often releases energy. but if other reactions or phase changes that release energy occur at the same time, bond formation can absorb energy.
Energy transformation is straight-forward in meaning that energy transfers from one thing to another. This happens most often in the environment.
Such devices are often called transducers. However they can have more specific names based on the type of energy change they perform.
The SI unit for energy - any type of energy - is the joule. For food, another unit, the calorie, is still often used.