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BJU Chem Test 4

first to refer to matter as being made up of discrete particles Democritus
describes how any sample of water contains 8 g of oxygen for every 1g of hydrogen law of definite composition
first model to include to include different masses of different elements Dalton's model
Thomson's cathode rays were electrons
subatomic particle with least mass electrons
credited with the discovery of the neutron James Chadwick
first identified and named the proton Ernest Rutherford
helped to explain line spectra Niels Bohr
energy emissions in certain quantities due to energy levels being quantized
states that it is impossible to know the energy and the exact position of an electron at the same time Heisenberg uncertainty principle
Louis de proposed wave nature of electrons
type of sublevel found in all principal energy level s sublevel
max # of electrons in a 3p orbital 2
total electron capacity of the third principal energy level 18
max # of electrons in a 4d sublevel 10
2 different isotopes of a single element would have the same number of _______ but a different number of _______ protons, neutrons
sum of the number of neutrons and the number of protons is known as mass number
determined by the weighted averages of isotopes of an element atomic mass
# of unpaired electrons are in a nitrogen atom 3
if an atom loses an electron, the atom will have, what kind of charge positive
Created by: cba2012



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