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WorksheetsAtomic structure practice quiz
Total questions: 23
Worksheet time: 32mins
Which statement about the atomic nucleus is most correct?
The nucleus is made of protons and neutrons and has a negative charge.
The nucleus is made of protons and neutrons and has a positive charge.
The nucleus is made of electrons and has a positive charge.
The nucleus is made of electrons and has a negative charge.
Which atomic particles have approximately the same mass [atomic mass unit, AMU]?
protons and neutrons
protons and electrons
neutrons and electrons
proton, neutron and electron
What information can you get from the atomic number of an element?
The number of protons.
The number of neutrons.
the number of particles in the nucleus.
the number of electrons only.
The number "18" in the periodic table square shows:
atomic mass.
atomic number.
elemental name.
elemental symbol.
The number "39.948" in the periodic table square shows:
elemental name.
atomic number.
atomic mass.
elemental symbol.
In Rutherford’s experiment, where would your expect the most alpha particles to strike the screen?
1
2
3
Always random, cannot predict.
How many protons does indium have?
49
66
114
115
What were Ernest Rutherford's three contributions to atomic theory?
Discovered that the atom is mostly empty space
Discovered the nucleus- did the gold foil experiment
Used the cathode ray tube in his discovery
Discovered the electron
Discovered that the proton had a positive charge
Who discovered the mass of an electron?
Joseph Priestly
Henri Becquerel
John Dalton
Robert Millikan
Antoine Lavoisier
Discovered a positive stream of particles that led to the discover of the proton.
Joseph Thomson
John Dalton
Eugen Goldstein
Robert Millikan
Which Scientist came up with the NUCLEAR model, that the nucleus is at the center of the atom?
Dalton & Democritus
Rutherford
Thomson & Millikan
Heisenberg & De Broglie
