what is chemical energy?
141922
Chemical energy is the amount of heat released from a chemical reaction to do work.  Since not all heat will be utilized, you will have a loss of heat which will lower the efficiency of the process. \n\nIn closer detail to a chemical reaction, studies are made on different reactions to determine the amount of energy released.  One of the best tools to determine this is to look at an Energy vs. time graph.  The barrier to overcome for a chemical reaction to come to completion would be the activation energy (slope to peak); this is the amount needed for a chemical reaction to proceed.  Once the requirements are met, the release of energy (negative slope of the same curve from apex), the difference between starting energy (baseline from beginning before additional energy was applied) and ending energy (the bottom of the slope where m = dE/dt = 0).  If the difference of energy is positive, the reaction is endothermic.  If negative, the reaction is said to be exothermic.  Exothermic reactions are used in many applications to power devices such as steam engines, and gasoline motors which are about 20-30% efficient at most.  Rockets, on the other hand are really inefficient yet they are our main means of propelling stuff into space.\n\nOn the other hand, more subtle means of chemical energy exists in fuel cells and batteries; they power devices through the transfer of electrons and a porous media of some sort connecting the two cells.  Although it is an alternative that to mixing two substances and sparking an explosion.\n\nIf a material spontaneously combusts, it is said that the requirements of meeting the activation energy has been met; look at the reaction of Na(s) with O2(g).  Sodium most readily gives up an electron which the oxygen will take.  Oxygen is more electronegative (It loves electrons more than Sodium).  Oxygen will prefer to take electrons from Sodium as opposed from it's own because Sodium would feel more satisfied with having one less electron.  Oxygen - Oxygen bonding on the other hand would mean that oxygen would have to share 4 electrons to feel satisfied (remember, octet rule - higher stability with complete s, p, d, orbitals filled).  So what does this mean?\n\nChemical energy is due to the release of energy due to trying to BEST satisfy the conditions of the electron-nucleus relationship.  If the nucleus requires 10 electrons, they are going to be nearby but in a highly defined probable region where they will linger to make the nucleus feel happy.  If another buddy (compound) comes along and offers the POTENTIAL for a better and more STABLE life, the substance will jump on it, thus reducing the potential energy of the whole substance.\n\nAlthough, look at this you would think chemical energy would even come from nuclear power plants.  But, don't let it fool you.  Nuclear power is a different beast itself.  It does not arise from chemical reactions but from decay of nucleus to produce energy.
337319
The USA creates more energy than any other country in the world.  When energy is created, especially by burning fossil fuels like coal and oil, chemical fumes are released into the air.  These chemicals, especially sulfuric dioxide and nitrogen oxides, combine with water vapor in clouds, and when it rains, the resulting acid is carried back to earth in the raindrops.
69782
me·tab·o·lism (mĭ-tăb'ə-lĭz'əm)\nn.\nThe complex of physical and chemical processes occurring within a living cell or organism that are necessary for the maintenance of life. In metabolism some substances are broken down to yield energy for vital processes while other substances, necessary for life, are synthesized.\nThe functioning of a specific substance, such as water, within the living body.\n\nWALKING
846365
Thermal energy IS heat.
152073
A chemical substance is any material substance used in or obtained by a process in chemistry. It can be an element, a compound, or a mixture thereof:\n\nA chemical element is a substance that cannot be divided or changed into different substances by ordinary chemical methods. The smallest particle of such an element is an atom, which consists of electrons centered about an nucleus of protons and neutrons. \nA chemical compound is a substance consisting of two or more chemical elements that are chemically combined in fixed proportions. \nA molecule is the smallest particle of an element or compound that retains the chemical characteristics of the element or compound. \nAn ion is an atom or group of atoms with a net electric charge, having lost (cation) or gained (anion) an electron. \nThe term "chemical" may refer to any chemical substance, though a popular meaning is "a product of the chemical industry". As such the term may carry connotations of being "unnatural" and perhaps harmful, even when such fears are unjustified, as with the dihydrogen monoxide hoax. \nRetrieved
68493
Energy is defined as being equivalent to Mass times the Speed of Light, Squared...\n\nE=MC(2)
290325
http://www.science.siu.edu/microbiology/micr201/chapter8N.html\n\nPotential Energy!  Check it out yourself at the link above.
643494
well\n\nlets take an example\n\nthe sun radiates solar energy. it is then trapped by plants and made into chemical energy through photosynthesis. and then  the plant is eaten by an animal. the energy is then converted to heat energy and lost to the environment due to movement.\n\nso, you see. energy is not created or is it destroyed but it changes state as it moves in the biosphere. this is called conservation of energy.
604773
The potential energy of a system is the energy which was spent to constitute the system from bringing its constituents closer\nto each other against the forces among them and this energy is stored in the syetem. The same way the interatomic energy is \nthe enrgy which was spent to bring the atoms closer against the vanderwaal forces.
998070
http://en.wikipedia.org/wiki/Kinetic_energy
134983
The sum of the chemical reactions that take place within each cell of a living organism and that provide energy for vital processes and for synthesizing new organic material.\n\nMy Adice to you: You seem to be doing a researh of some scientific sort. I recommend you take advantage of the internet which could help you in this regard. Try accessing an online Encyclopedia.\n\nGood Luck!
423646
A chemical property is a property of a substance that becomes apparent during a chemical reaction, and can only be observed by changing the substance's chemical identity.
283905
Kinetic Energy describes the amount of energy an object has by virtue of it hasving some non-zero mass and traveling at some speed.\nKE= 1/2 mv^2\n\nPotential Energy describes the energy that could be gained by that object if it was not at that potential.  It is not really accurate to say that potential energy is energy at rest since it is very possible for moving objects to have potential energy.\nA good example would be a rock sitting on a cliff.  That rock has some potential gravitiational energy since it is sitting some height above the ground (the bottom of the cliff).  The potential energy equals the amount of energy needed to put that rock up there in the first place and the amount of energy which could be gained if the rock falls down from the cliff.  As the rock is falling, before it hits the ground, the rock has some fraction of its potential energy converted into kinetic, in other words it has both at the same time.\nThere are many forms of potential energy, gravitational potential energy being the most commonly described.\ngravitational PE = mgh
347168
Energy that enters the system from the surroundings.
45010
Although the words are used in many ways, science has specific definitions\nfor each.\n\nForce is a push or a pull.  Force is between objects, one object pushing or\npulling on another.\n\nEnergy is more difficult to define, because energy is "abstract".  Energy is\na quantity that gives an object the ability to affect other objects.  There\nare different kinds of energy.  Kinetic energy is the energy of motion,\nstored within a moving object.  Potential energy is stored in the force\nbetween objects, perhaps in the stretch of a spring.  Thermal energy can be\nstored in the temperature of an object.  Energy passes from place to place,\nobject to object, but never disappears.  The total energy of the universe\nremains constant.\n\nFuel is a material that has energy stored in its chemical structure.  When\nfuel is processes (burned, for example), the chemical energy is released.\nThis released energy can become heat and cause the temperature of something\nto rise.  The released energy can become the kinetic energy of a car.  It\ncan become the energy carried by sound to your ears.
888187
something about chemistry
71275
Heat is the kinetic energy of molecular motion. The molecules of a hot object are in rapid motion; the hotter, the higher the average speed and the greater the thermal energy. If the object is gaseous the motion consists of free-path travel and collisions with other molecules. If it is liquid the paths between collisions are shorter, and if solid the motion is vibrational with no secular movement.