CHM103 Week 1 Notes (8/22-8/26)
CHM103 Week 1 Notes (8/22-8/26) 103
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This 2 page Class Notes was uploaded by askcch on Friday September 9, 2016. The Class Notes belongs to 103 at University of Miami taught by Elliot Atlas in Fall 2016. Since its upload, it has received 50 views. For similar materials see Chemistry for Life Sciences I (Lecture) in Chemistry at University of Miami.
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Date Created: 09/09/16
CHM103 Class otes eek (8/228/26) ________________________________________________________________________________ From revious ections N/A ________________________________________________________________________________ Chapter 1: atter and Measurements 1.1 Chemistry: The entral Science Chemistry: The study of nature, properties, and transformations of matter Matter: The physical material that makes up the universe; anything that has mass and ccupies space Property: A characteristic useful for identifying a substance Physical vs chemical properties Physical: observed without chemical reaction & without changing the chemical composition Color, size, shape, volume, density, temperature, boiling point/melting oint, etc. Chemical: observed when substance undergoes chemical change or reaction Toxicity, oxidation, flammability, heat of combustion, radioactivity, etc. Physical vs chemical change Physical: change in state, size, formation/separation of mixtures Chemical: hange in chemical composition 1.2 States of Matter Solid, iquid, Gas 1.3 Classification fMatter Mixture vs Pure substance Mixture: A blend of two or more substances, each of which retains its chemical dentity Homogeneous: A uniform mixture that has the same composition throughout can’t be easily separated) Heterogeneous: A nonuniform mixture that has regions of different composition Pure substance: A substance that has a uniform chemical composition throughout Element: e.g. Na, H, e, a Compound: .g H2O, NaCl 1.4 Chemical Elements and Symbols 118 elements have been identified; 91 occur naturally 1.5 Chemical Reactions: Examples of Chemical Change Reactants → Product(s) E.g. Ni (s) + 2HCl (aq) → NiCl2 (aq) + H2 (g)
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