Sort of where it's coming from, so we've got chemical energy.

The basic source of the heat is chemical energy from the body's metabolism.

He also proposed that plants convert light into chemical energy.

I didn't realize the human body contained quite so much chemical energy."

Other times, chemical energy is used to refer to the difference in bond energies.

The plants also add some chemical energy to the fuel from biological molecules.

Some of the electrical cells produce electricity without using chemical energy.

In this example we are neglecting chemical energy, heat, etc.

Chemical energy, on the other hand has so many different meanings and usages.

It mustered more chemical energies within itself and went on.

The main problem is that green plants convert less than 1% of incident sunlight into chemical energy.

I have converted chemical energy from the gas into heat energy in the water.

"Chemical energy release" is a result of that event.

"Certainly not the chemical energy that powers our bodies."

It, too, was energy of a sort: chemical energy, whose slow release within her body would provide its own heat.

Actually, it is not super-easy to make "chemical energy" with visible light.

Why do molecules possessing stronger bonds have less chemical energy?

According to the currently accepted laws of physics, there is no way to extract chemical energy from water alone.

Only a tiny fraction of the original chemical energy is used for work:

It gives the efficiency with which the chemical energy of fuel is converted into mechanical work.

It shows that all chemical energy of fuel is not converted into heat energy.

Since gas burns quite efficiently (there's that word again) then 100% of the chemical energy gets converted into something.

Some examples are: chemical energy, electricity, light, and heat.

Simple examples of storage of chemical energy are batteries and food.

Plants usually convert light into chemical energy with a photosynthetic efficiency of 3-6%.