Chem 111 notes

Chem 111 notes - Chem111 August28,2009...

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Chem 111 12:18 August 28, 2009 Number and unit of meaurement Exponential (scientific) notation SI base units – pg.16 Temp in K =  ° C + 273 SI prefixes- p.19 from mega to nano Mega (M)-10 6 Kilo (k)-10 3 Deci(d)-10 -1 Centi (c) -10 -2 Milli (m)-10 -3 Micro-10 -6 Nano(n)-10 -9  August 31, 2009 Density =mass/volume 1.00 g/cm 3  = density for water
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1cm 3  = 1 mL Mole- 6.02 x 10 23  things (Avogadro’s number) Matter- has mass and occupies space (has mass and volume) 2 types of matter- substances and mixtures substances: one type of matter elements (can not be chemically split into a simpler solution).  Ex- silver, gold, oxygen compounds (composed of 2 or more elements in chemical compositions.  Ex- water, salt mixture: 2 or more substances homogenous (uniform throughout) inhomogenous (not uniform) aka heterogenous ex: salt + water (brine) physical states of matter: solid- distance and particle size comparable.  Well-defined/ordered arrangements of  particles.  High density liquid- distance and particle size comparable.  Random arrangements of particles.  High  density gas- large distances between particles of matter compared to the size of the particles.  Low density plasma
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changes and properties (chracteristics) of matter: physical  chemical nuclear properties of matter (alternate categories intensive- mass independent (temperature, color, density) extensive- mass dependent (mass, volume) constituents (parts) of atoms protons (p + ) neutrons (n 0 ) electrons (e-) properties of protons, neutrons, and electrons mass p +  + n 0  = large e- = small electrical charge p + = positive n 0 = neutral
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e-= negative location in the atom p + +n 0 = center of the spherical atom (nucleus) e-= orbit the massive nucleus September 2, 2009 *know the name-symbol pairings for elements #1-37 and on the periodic table of  elements.  You must also know: Hg- mercury Ag- silver Au- gold I- iodine Pb- lead Sn- tin Ba- barium Atomic # is the number of protons in nucleus.  Since atoms are neutral, the atomic  number also represents the number of electrons in the nucleus.   Flourine -> 9 protons and 9 electrons Carbon- C
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This note was uploaded on 02/25/2012 for the course CHEM 4385 taught by Professor Staff during the Fall '11 term at Texas State.

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Chem 111 notes - Chem111 August28,2009...

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