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CH 4 science jensen
studying
Question | Answer |
---|---|
what was democritus' contribution towards better understanding of the atom | he stated that the atom was the smallest particle that things were made of |
what was daltons contribution towards better understanding of the atom | all matter is made of atoms |
what was thomsons contribution towards better understanding of the atom | discovered electrons |
what was rutherfords contribution towards better understanding of the atom | the atom had a positive nucleus and negative electrons surrounding it |
what was bohrs contribution towards better understanding of the atom | electrons travel in definite paths |
what are the rules for putting electrons in bohr diagrams | they have to travel in definite paths |
define element | a pure substance made from atoms that all have the same number of protons |
what is the unit measurement for an atoms mass | amu |
how is the identity of an element determined | atomic number |
difine isotope | a atom with one more neutron than proton |
define ion | no longer neutral because it has gained or lost electrons |