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Chem MidTerm


4 Steps of Scientific Method observations testing hypotheses developing theories scientific laws
Chemistry study of the composition of matter and the changes that matter undergoes
Organic or inorganic has to have carbon to be organic
Law of conservation of mass in any physcal or chemical mass is never created
3 states of matter solid- definite shape and volume gas-takes both shape and volume of its container liquid-indefinite shape flow yet fixed volume
several indications of chemical reaction transfer of energy color
Accuracy close to the right answer
Precision many times you get the same thing over and over again
atomic number number of protons in the nucleus of an atom of an element
mass number total number of protons and neutrons in the nucleus of an atom
atomic mass weight average of the masses of the isotopes of an element
isotope atoms of the same element that have the same atomic number but different atomic masses due to a different number of neutrons
democtritis name atom
dalton atomic theo
rutherford nucleus
millikan electric charger
chadwick neutron
thomson electron
bohr energy level
atomic mass units are based on the------ One amu is equal to ------- Carbon + 1/2 of Carbon 12 atom
modern model of the atom mostly empty space
what is quantum amount of energy need to mannel electron from one energy level to another
Describe each quantum number with word, symbol Energy level (n) 1-7 Sub Level (l) orbital (m) Spin + or -1/2
how many s,p,d,and f orbital are there s=1 p=3 d=5 f=7
How many electrons may be in each energy level 1=2 2=8 3=18 4=32 5=50 6=72 7=98
different types of chemistry physical-area that deals with the mechanism rate and energy transfer analytical chemistry-focuses on the composition of matter biochemistry-processes that takes place in living organisms inorganic- dont contain carbon organic-contain carbon
Created by: KatReid



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