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WorksheetsAtomic Theories
Total questions: 14
Worksheet time: 7mins
In Thomson’s “plum pudding model”
a Positively charged electrons are scattered throughout a negatively charged atom
Negatively charged electrons are scattered throughout a positively charged atom
Negatively charged electrons are organized into shells
There are no charged particles
The person who discovered the nucleus
Niels Bohr
Marie Curie
James Chadwick
Ernest Rutherford
Which of the following is NOT part of Dalton’s atomic theory?
Atoms are indivisible particles.
All atoms of a given element are identical.
Atoms combine in simple whole-number ratios.
Atoms can be created or destroyed.
The neutron has a ____________ charge and is found in ______________
neutral charge; the nucleus of an atom
neutral charge; the outer shell of an atom
negative charge; the electron cloud
positive charge; the nucleus of an atom
Who was the first group documented to do experiments
Scientists
Greeks
Alchemists
Who created the planetary model?
Albert Einstein
James Rutherford
John Dalton
Niels Bohr
The three subatomic particles are called
quarks, leptons, and bosons
neutrons, electrons, and muons
protons, neutrons, and electrons
protons, neutrons, and positrons
Democritus contributed to our understanding of atoms by
introducing the concept of indivisible particles called atoms.
Proposing that all matter is made of four elements
Claiming that atoms can be divided into smaller parts
The symbol for Hydrogen is
O
N
He
H
Where are electrons found in the atom?
In the nucleus of the atom.
In the electron cloud around the nucleus.
The number of protons can be determined by looking at what on the periodic table
Mass number
Atomic weight
Atomic number
Element symbol
In a neutral atom....
The number of protons and neutrons are equal.
The number of protons equals the number of electrons.
The number of protons is greater than the number of electrons.
The number of electrons is greater than the number of protons.
Thomson proposed a model that is referred to as
the 'plum pudding model' of the atom
the 'solid sphere model' of the atom
the 'electron cloud model' of the atom
the 'nuclear model' of the atom
Which subatomic particle has a positive charge?
Photon
Neutron
Electron
Proton
