CHM 12901 Lecture Notes - Lecture 2: Chemical Energy, Kilogram, Decimal Mark
26 Aug 2016
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Document Summary
Chemistry is the study of matter and the changes that matter undergoes and the energy associated with these changes. Matter: anything that has a mass and occupies spaces. Substances: forms of matter that have a definite composition and distinct properties: either elements or compounds. Energy is stored in molecules: as stored energy it is potential energy, some molecules store more than others. When a fuel is burned, potential energy in converted into kinetic energy: the amount of k. e. you can get out depends on the amount of p. e. is available. Energy is neither created nor destroyed, it is only converted between forms: total energy of the universe is constant, this is known as the law of conservation of energy. Is the energy possessed by an object by virtue of its position. A lower energy state is more stable than a higher one.
