CHEM 111 Lecture Notes - Kinetic Energy, Potential Energy, Chemical Change

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10 Mar 2014
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Chemistry the study of matter, its changes, and the associated energy of those changes. Physical change occurs within the substance itself without changing into or interacting with another substance. Chemical change occurs when a substance interacts with or changes into another substance. Energy ability to do work, total of potential energy and kinetic energy. Potential energy energy of position of an object or the bonds and atoms of a molecule. All measurements have a quantity and a unit. Conversion factors are used to move from one unit to another. A marathon is measured to be 26. 2 miles. French: syst me international (meter, gram) vs. english sytem (foot, ounce) Not an si unit (m3), though used with decimal prefixes. Mass quantity of matter which does not change. Weight depends on gravitational pull (earth vs. moon) Example of an intensive property irrespective of the amount of material. Extensive property dependent on the amount of material.

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