Atomic Structure Flashcards
Does the number of protons determine the identity of an element?
YES
Did Eugen Goldstein determine the mass and charge of the electron using the oil drop apparatus?
NO
Did Jame Chadwick confirm the existence of the neutron?
YES
Is an alpha particle a helium atom?
NO
Did JJ Thomson conclude that the atom was divisible?
YES
Did Ernest Rutherford find that the nucleus is tiny compared to the atom as a whole?
YES
Did Robert Millikan discover the electron?
NO
Does the cathode become the negatively charged end of the cathode ray tube?
YES
Did Ernest Rutherford perform the Gold foil Experiment?
YES
Was the cathode ray tube used to discover the neutron?
NO
In Dalton’s theory of the atom - does it still hold true today that all elements are composed of tiny indivisible atoms?
NO
Did Ernest Rutherford discover the proton?
NO
Was Democritus the first person to propose a scientific and testable theory of the atom?
NO
Is Rutherford’s model of the atom described as the plum pudding model?
NO
We’re isotopes discovered by Robert Millikan?
NO
Be able to determine the atomic number of elements
See Mrs. K for help
Be able to identify the Element with a given number of protons
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Be able to calculate the neutrons when given the atomic mass and the # of protons
See Mrs. K for help
Be able to calculate the number of protons when given the atomic mass and the neutrons
See Mrs. K if you need help
Be able to identify an element when given the atomic mass and the # of neutrons
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Be able to determine the COMPLETE SYMBOL of an element
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Be able to determine the # of protons, # of neutrons, the mass of different elements by looking at a chart.
See Mrs. K for help
Who discovered the neutron?
James Chadwick
What are atomic weights measured in?
Atomic Mass Units (amu’s)
What are atomic masses on the period table?
Weighted averages
