Atomic Structure 1 Question Preview (ID: 434)

Review Of Atomic Structure. TEACHERS: click here for quick copy question ID numbers.

The atomic number is the number of _____________ in the nucleus of an atom.
a) electrons
b) neutrons
c) ions
d) protons

Where can electrons be found orbiting the nucleus?
a) very close to the nucleus
b) in clusters of threes around the nucleus
c) in orbit shells at great distances from the nucleus
d) in random orbits that may cut through the nucleus

Atoms are the building blocks of _____________.
a) elements
b) electrons
c) subatomic particles
d) ions

Electricity is a form of energy transfer in which atoms lose and regain ___________.
a) protons
b) neutrons
c) electrons
d) leptons

The distance between the nucleus and the electrons of an atom _____________.
a) makes chemical reactions take a very long time to complete.
b) is so small that the electrons often hit the neutrons.
c) is unknown to scientists at this time.
d) is so great that atoms are mostly empty space.

Protons, neutrons, and electrons are the subatomic particles found in an
a) element
b) isotope
c) mineral
d) atom

The nucleus contains both neutrons and positively charged particles called
a) protons
b) electrons
c) neutrons
d) ions

What particles are found in the nucleus of an atom?
a) protons and electrons
b) protons and neutrons
c) neutrons and electrons
d) only protons

What part of an atom has the smallest mass?
a) protons
b) neutrons
c) electrons
d) nucleus

The mass number of an atom is the number of protons plus the number of ______ .
a) neutrons
b) positrons
c) electrons
d) protons

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