Download Chemical Energy

Energy Exists in Different Forms

What is energy?
Energy is the ability to cause change.
 All forms of energy cause change to occur.

Forms of Energy

Mechanical Energy
energy that moves objects
 stored in objects


Sound Energy
movement of energy through substances in
longitudinal waves.
 force causes an object or substance to vibrate
 transferred through the substance in a wave


Chemical Energy

energy stored in chemical compositions
 atoms

and molecules
It is the energy that holds these particles together
petroleum
Biomass
natural gas
propane

Thermal Energy or heat

the internal energy in substance
 the
vibration and movement of the atoms and
molecules within substances.
Geothermal
http://www1.eere.energy.gov/geothermal/gpp_animation.html

Electromagnetic Energy or radiant energy
travels in transverse waves from our Sun and other
stars
 Solar energy is an example of radiant energy.


Nuclear Energy

stored in the nucleus of
an atom
 the
energy that holds
the nucleus together
•energy released when the
nuclei are combined or split
Nuclear power
plants split the nuclei
of uranium atoms in a
process called
fission.
The sun combines the
nuclei of hydrogen atoms
Kinetic Energy

Kinetic energy
energy of motion.
 An object which has motion has kinetic
energy

 whether
it be vertical or horizontal motion
where m = mass of object
v = speed of object
Potential Energy

stored energy that an object has due to its
position or chemical composition

Gravitational Potential Energy
 Energy
stored in an object as the result of its
vertical position (i.e., height)
PEgrav = mass * g * height
PEgrav = m * g * h
m = mass of the object, h = height of the object, g acceleration of gravity
(9.78 m/s/s = 9.78 meters per second squared)

Elastic Potential Energy



energy stored in elastic materials as the result of their
stretching or compressing
more stretch, the more stored energy
Chemical Potential Energy
Dependent on chemical
Makeup: atoms and molecules
 Energy is released when molecules
Are broken up or split.


Atoms are rearranged