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WorksheetsModels and Structure of the Atom
Total questions: 15
Worksheet time: 9mins
He proposed the "plum pudding model of the atom.
John Dalton
Niels Bohr
Ernest Rutherford
JJ Thomson
Which is the correct sequence of the scientists who made major changes in the model of the atom?
1-JJ Thomson
2-James Chadwick
3-John Dalton
4-Niels Bohr
5-Ernest Rutherford
2, 1, 4, 3, 5
5, 3, 2, 1, 4
3, 1, 5, 4, 2
4, 3, 2, 1, 5
Who discovered the nucleus of an atom?
JJ Thomson
John Dalton
Ernest Rutherford
Democritus
He proposed the first formal atomic theory of the atom.
John Dalton
JJ Thomson
Niels Bohr
Ernest Rutherford
What experiment proved a small dense positively charged nucleus, and who did it?
gold foil experiment, Rutherford
gold foil experiment, Thomson
cathode ray tube experiment, Thomson
cathode ray tube experiment, Dalton
What is the tiny, massive central part of the atom?
Neutron
Electron
Proton
Nucleus
What are electrons?
Massive, positively charged particles
Tiny, negatively charged particles
Clouds of dust in the nucleus
Neutral particles around the nucleus
The atomic mass is dependent on which two subatomic particles?
Protons and electrons
Protons and neutrons
Neutrons and electrons
Electrons and the nucleus
This is the same as the number of protons
atomic number
mass number
charge
atomic mass
Which of the following statements about subatomic particles is correct?
Electrons are negatively charged and are the heaviest subatomic particle.
The mass of a neutron nearly equals the mass of a proton.
Protons are positively charged and the lightest subatomic particle.
Electrons, protons, and neutrons all have the same mass.
Isotopes of the same element have different:
atomic numbers
symbols
mass numbers
positions on the periodic table
A Carbon-14 isotope contains the following:
12 Protons, 6 Electrons, 8 Neutrons
12 Protons, 8 Electrons, 14 Neutrons
6 Protons, 6 Electrons, 8 Neutrons
6 Protons, 8 Electrons, 12 Neutrons
Which of the following represent an atom containing 26 protons, 32 neutrons, and 26 electrons?
Which of the following represent an atom containing 18 protons, 25 neutrons, and 18 electrons?
Elements in the same ________ are more chemically similar.
group
period
club
table
