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A repelling force occurs between two charged objects when the charges are of
The _________________of many atoms are bound very loosely to an atom and can be easily dislodged
Which best describes electrical forces and gravitational forces?
The gravitational force is much stronger than the electrical force
The gravitational force is slightly stronger than the electrical force
The electrical force is much stronger than the gravitational force
The electrical force is slightly stronger than the gravitational force
Atomic nuclei of almost all elements consist of
protons, neutrons, and electrons
neutrons and electrons
protons and neutrons
protons and electrons
The SI unit of charge is the ________________.
An attracting force occurs between two charged objects when the charges are of
Electric charge is
found only in a conductor
found only in insulators
The net charge of an nonionized atom
depends only on the number of protons it has
depends only on the number of electrons it has
usually cannot be determined
A positive ion has
more protons than electrons
a +1 charge always
more electrons than protons
The charge of an electron is
What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge?
The fur is left neutral
Electrons are added to the rod.
Electrons are added to the fur
Protons are removed from the rod
Which correctly describes the magnitudes of charges of a proton and electron?
The magnitudes of a proton’s charge and an electron’s charge are always equal and never change
The magnitude of the electron’s charge is slightly greater
The magnitude of the proton’s charge is slightly greater
The magnitudes of a proton’s charge and an electron’s charge are always equal, but they vary for different atoms.
Protons and electrons
repel each other
attract each other
do not interact with each other
A charged atom is called ________________
a proton rich atom
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