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The Atom Questions and Answers Correct
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Exam of 2 pages for the course Atom at Atom (The Atom)
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The AtomAtom - answer Smallest part of an element that can still retain the properties of that
element.
Subatomic particles - answer These make up the atom, and they are protons, neutrons,
and electrons.
Proton - answer This subatomic particle is in the nucleus of the atom, and has a positive
charge.
Neutron - answer This subatomic particle is in the nucleus of the atom, and has a
neutral charge,
Electron - answer This subatomic particle circles the nucleus of an atom in a motion
called an orbital. It has a negative charge. It also has no mass.
Quark - answerA particle that makes up a proton or neutron, it comes in 6 different
flavors. (Sounds like ice cream!)
Atomic Number - answer Number of protons an element has in its atomic state.
Mass Number - answer The sum of the number of protons and neutrons an element has
in its atomic state.
Theory - answerA unifying scientific explanation supported by testing.
Nucleus - answer The center of an atom, made of protons and neutrons.
Isotopes - answer Atoms with the same number of protons but different numbers of
neutrons.
Model - answer Representation of an object or system.
Electron cloud - answerRegion around an atom's nucleus in which electrons are likely to
be found.
AMU - answerStands for Atomic Mass Unit, whuch is an SI unit used to express the
mass of atomic particles.
Subatomic - answerA word meaning "smaller than an atom"
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