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Atoms Questions and Answers 100% Accurate
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Exam of 2 pages for the course Atom at Atom (Atoms)
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Atomsatom - answer The simplest part of an element that still has the properties of the
element. It is made up of protons, neutrons and electrons.
nucleus - answer The center of an atom. It is the heaviest part of an atom.
proton - answer A positively charged particle found in the nucleus of an atom
neutron - answer A particle found in the nucleus of an atom that does not have a charge
electron - answer A negatively charged particle that surrounds the nucleus in the
electron cloud
isotope - answer An atom that has the same number of protons as other atoms of the
same element, but a different number of neutrons
atomic number - answer A number that indicates how many protons are in an atom. It
determines which chemical element the atom is
atomic mass - answerThe sum of the numbers of protons and neutrons in the nucleus of
an atom
electron cloud - answerThe region around the nucleus of an atom where electrons are
found
positive - answerThe charge of a proton
negative - answerThe charge of an electron
neutral - answerThe charge of a neutron
2 - answerThe maximum number of electrons that fit in the first energy level
8 - answerThe maximum number of electrons that fit in the second energy level
18 - answerThe maximum number of electrons that fit in the third shell energy level
almost zero - answerThe approximate mass of an electron
empty space - answerWhat an atom is mainly made up of
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