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Chem Midterm

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
formula for finding energy   E=hv  
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h= ???   6.63x10^-34 J/s  
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Formula for finding wavelength   C=v/\  
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C= ???   3.00x10^8 m/s  
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covalent bond   sharing of electrons between a nonmetal and a nonmetal  
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ionic bond   gain and loss of electrons between a metal and a nonmetal  
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metallic   strong bond between a metal and a metal  
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group 1=   Alkali metals  
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group 2=   alkaline earth metals  
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group 17=   halogens  
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group 18=   noble gases  
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periodic trends for atomic radius   <---- increasing and down  
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periodic trends for ie, en, and ea   ^ and ----> increasing  
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time si base unit   second  
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length si base unit   meter  
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mass si base unit   kilogram  
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temperature si base unit   kelvin  
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amount of a substance si base unit   mole  
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giga   (G) 1x10^9 m  
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mega   (M) 1x10^6 m  
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kilo   (k) 1x10^3 m  
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centi   (c) 1x10^-2 m  
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mili   (m) 1x10^-3 m  
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micro   (ua) 1x10^-6 m  
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nano   (n) 1x10^-9 m  
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accuracy   how close a measurement is to some accepted or true value % error  
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precision   reliability, repeatability, consistency of a measurement + or - uncertainty and significant digits  
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element   simplest kind of mtter, all one kind of atom, can't be broken down  
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compound   substances that can be broken down chemically  
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mixture   physical blend of @least two substances  
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solid   definite volume and shape; particles packed in fixed positions  
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liquid   definite volume, indefinite shape; particles close together  
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gas   indefinite volume and shape; particles @ great distances from one another in constant random motion  
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plasma   high temperature, ionized phase of matter as found on the sun  
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phase changes that require energy   melting, evaporation, sublimation  
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phase changesthat release energy   condensation, freezing  
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Dalton   Atomic theory  
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Thomson   plum pudding model  
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Rutherford   Gold Foil Experiment, nucleus, nuclear model  
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Bohr   planetary model  
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schrodinger   mathematical; quantum mechanical model  
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chadwick   neutron  
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fission   splitting a nucleus into 2+ smaller nuclei; nuclear energy and weapons  
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fusion   combining of two nuclei to form one nucleus oflarger mass; H-bomb, sun  
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principal qn   n- denotes energy level in which the electron is located; indicates distance from nucleus- n increases, distance increases  
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angular momentum qn   l- sublevel  
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magenetic qn   ml- orientation of electron's orbital; between -1 and 1; max # orbitals for each energy level is n^2  
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spin qn   ms- direction of spin of an electron within a magnetic field; each orbital can contain 2 electrons; 1 cw 1 ccw  
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Created by: AlanaR
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