Chemistry 1211kChapter 1:( Matter and Measurement ) Notes by Meriam SiumChemistry:Study of matter & energy; tries to understand the reactivity,transformations,properties,structures,& composition of atomsChemistry is based on the Scientific MethodObservation(what happens) ….Hypothesis(explains why things happen)(based onsmall # of events)Atoms&Molecules are building blocksAtoms=can't destroy=smallest Molecule=combination of 2 or more things,based on ratio...compounds(CO2=2(CO=1)Matter can be classified -by its state(physical form)-by its composition(basic components that make it up)Solid Matter-2 types: crystalline & amorphousCrystalline:patterns w/ long range, repeating orderAmorphous: molecules or atoms don't have patternsClassification of Matter by Components Mixture=minimum of 2 substances(more than 1 component) Homogenous:transparent,uniform Heterogeneous: particles clogged Elements= 2 atoms =(oxygen,nitrogen) Compounds= minimum of 2 different elementsSeparating Mixtures:Filtration: separate 2 components (ex. sand & water)Distill:separate by boiling points of liquidsDecanting: oil & water( solid&liquid)Extraction:oil & water ( shake in a bottle)( 2 liquids)Examples:sweat=mixture(homogenous)carbon dioxide=compoundaluminum=elementsoup=mixture(heterogeneous)wine=mixture(
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