CHM135H1 Chapter Notes - Chapter 1: Kinetic Energy, Surface 3, Potential Energy
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CHM135H1 Full Course Notes
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Chemistry: the study of matter + its properties, changes the matter undergo, + energy assc w/ those changes. Composition: types + amount of simpler subs that make it up. Subs: types of matter with defined + fixed composition. Learned by the observed properties (char. that give each sub its unique id) To identify a sub, look @ 2 props: physical shows by its self, without changing/interacting into another sub. Ex) mp, density: chemical show as it changes/interacts with another sub. States (solid, liquid, gas: solid fixed shaped, doesn"t conform *not defined by rigidness/hardness, liquid varying shaped that conform *only to extent of its volume. Has upper surface: gas *fills entire container. Depending on temp + pr of surroundings, subs can exist in all states and undergo changes in state too. * p-change caused by heating can generally be revered by cooling, not generally true for c-chanrge* Macroscopic scale: props + behavior we can see.
