chem quiz - moles, molar mass, history of the atom
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17 Terms
what is the definition of molar mass?
the mass of one mole of that substance
quantum model
Schrodinger
nuclear model
Rutherford
who discovered the atom?
Dalton
who proposed the concept of the atom?
Democritus and Leucippitus (but know Democritus for sure)
planetary model
Bohr
plum pudding theory
Thompson
who discovered the proton and the nucleus of an atom?
Rutherford
who said that elements exist as discrete "packets" of matter?
Dalton
who proposed the law of conservation of mass?
Lavoisier
what does the word atom mean?
uncuttable
who proposed the uncertainty principle?
Heisenberg
what is the quantum theory of the atom based on?
probability
In the quantum theory of the atom, electrons have properties of both ________ and ________. In this theory electrons are found in ________.
particles; waves; orbitals
When did Thomson discover the electron?
1897
Scientists use the mole to represent...
the number of atoms, particles, or molecules in a sample
which scientists got together in the early 1900s to figure out the structure of the atom?
Bohr, Rutherford, Planck, and Einstein