CHEM 1202 Chapter : August 23rd
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Energy can explain chemistry happens, and it"s usually logical because we experienced it. Gasoline and food, trees and body fat (things that can be used for energy (kinetic) spending energy. Burning wood (or gasoline or coal) exercise. Energy cannot be created or destroyed, it can only be changed from one form into another . Combustion reactions use high-energy molecules to produce energy (usually for heat) Ethene (c2h4) and oxygen gas o2 from carbon dioxide (co2), water (h2o), and heat energy. Positive (protons) and negative (electrons) charges attract. The energy that binds atoms and electrons together is called potential energy. Repelling atoms do not require energy (electronegativity) to pull apart. *in energy, low and more negative values are favorable. *putting two repulsive interactions together requires more energy (potential energy graph) (question of the day) Answer: the product of the charges and the inverse separation between the charges . Energy can be transferred either by heat (q) or by work (w)
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