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Atoms Vocabulary Questions with Solutions
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Exam of 1 pages for the course Atom at Atom (Atoms Vocabulary)
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Atoms Vocabularyelements - answer a substance that cannot be broken into smaller pieces
atom - answer the "smallest piece of matter" that if broken into smaller pieces, loses its
original properties
nucleus - answer the center of an atom; contains the protons and neutrons
protons - answer positively charged particles; identify the atom
neutrons - answer neutral particles; are the "glue" that hold the atom together
electrons - answer negatively charged particles; move around the outside of the nucleus
atomic number - answer the number of protons in an element's nucleus
periodic table - answer the chart that organizes the elements
atomic mass unit - answer special unit used for the mass of a subatomic particle
valence electrons - answer the electrons in energy level that is farthest from the
nucleus; help determine which elements atom will bond with
ion - answer an atom in which there is an unequal number of protons and electrons
positive ion - answer an atom with more protons than electrons
negative ion - answer an atom with more electrons than protons
2 - answer the number of electrons that fit in the electron layer closest to the nucleus
8 - answer the number of electrons that fit in the second electron layer
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