Atomic Structure: Question Preview (ID: 24227)

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The 3 basic components of an atom are:
a) protons, neutrons, and ions
b) protons, neutrons, and electrons
c) protons, neutrinos, and ions
d) quarks, neutrons, and electrons

An element is determined by the number of
a) atoms
b) protons
c) electrons
d) neutrons

The nucleus of an atom consists of
a) electrons
b) neutrons
c) protons and neutrons
d) protons and electrons

A single proton has what electrical charge?
a) no charge
b) positive charge
c) negative charge
d) either a positive or negative charge

Which particles have approximately the same size and mass as each other?
a) neutrons and electrons
b) electrons and protons
c) protons and neutrons
d) none - they are all very different in size and mass

Which two particles would be attracted to each other?
a) protons and electrons
b) electrons and neutrons
c) protons and neutrons
d) all particles are attracted to each other

The atomic number of an atom is:
a) the number of electrons
b) the number of neutrons
c) the number of protons
d) the number of protons plus neutrons

Changing the number of neutrons of an atom changes its:
a) isotope
b) element
c) ion
d) charge

When you change the number of electrons on an atom, you produce a different:
a) isotope
b) ion
c) element
d) atomic mass

According to atomic theory, electrons are usually found:
a) in the atomic nucleus
b) outside the nucleus, in orbit around it
c) outside the nucleus in energy levels, also known as the electron cloud
d) Two answers above are correct.

An ion with a -1 charge
a) has gained an electron.
b) has lost an electron.
c) has lost a proton.
d) has gained a neutron.

Mass number
a) is the number of protons plus neutrons.
b) is the number of protons plus electrons.
c) is the number of electrons plus neutrons.
d) is the number of protons only.

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