WorksheetsAtomic Theory - Key Scientists
Total questions: 15
Worksheet time: 8mins
What did Rutherford discover using his "Gold Foil" experiment?
the nucleus
electrons
neutrons
protons
What did James Chadwick discover in 1932?
In what year did Erwin Schrödinger create the Quantum Mechanical model of the atom?
1932
1913
1926
1923
What part of Dalton's atomic theory was later disproved by the discovery of the proton and the electron?
Atoms combine in whole number ratios to form compounds
Atoms are indivisible
All elements are made up of atoms
Atoms cannot change into another element due to a chemical reaction
Eugen Goldstein discovered the ____ in 1886
electron
nucleus
proton
corpuscle
The Greek word "atomos" , which is where we get the word "atom", means
indivisible
invisible
indescribable
individual
The first person to suggest the idea of the atom was
Democritus
John Dalton
Niels Bohr
Dmitri Mendeleev
Which scientist discovered that electrons move and behave like waves in the year 1923?
Ernest Rutherford
Niels Bohr
Robert A Millikan
Louis de Broglie
The first atomic model created by JJ Thomson was called
The Thomson Model
The Plum Pudding Model
The Quantum Mechanical Model
The Bohr's Model
In his atomic model known as the Bohr's Model, Niels Bohr stated that electrons were found in specific
elements
nuclei
orbitals
roundabouts
Robert A Millikan discovered that the mass of an electrons is roughly
1/1840 times the size of a proton
the same size as a proton
the same size as an atom
1840 times the size of a proton
The first periodic table of elements was created in 1869 by
John Dalton
JJ Thomson
Dmitri Mendeleev
Louis de Broglie
The electron was discovered using a cathode ray tube by JJ Thomson in the year
1897
1869
1808
1911
Which of the following is NOT true about the structure of the atom?
Atoms are mostly empty space
The nucleus of the atom contains protons and neutrons
The electron is neutrally charged
Atoms make up all matter
The newest and most accurate model of the atom is known as
The Bohr's Model
The Quantum Mechanical Model
The Rutherford Model
The Plum Pudding Model
