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- Multiple ChoicePlease save your changes before editing any questions.
the basic structural unit of matter
atom
matter
element
nucleus
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a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means
element
subatomic particle
electron
matter
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the positively charged subatomic particle contained in the nucleus of an atom
proton
neutron
electron
matter
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a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge
proton
neutron
electron
matter
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a negatively charged subatomic particle that orbits the nucleus of an atom
proton
neutron
electron
matter
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an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row
Periodic Table of Elements
Atomic Theory
Isotopes
Subatomic Particles
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one or two letters that represent the name of an element
element name
element symbol
atomic number
atomic mass
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a unique number for each element that equals the number of protons in an atom of that element
element name
element symbol
atomic number
atomic mass
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the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom
element name
element symbol
atomic number
atomic mass
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a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
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a row on the Periodic Table of Elements
family
period
row
isotope
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one of several forms of a single element, which contains the same number of protons, but different numbers of neutrons
isotope
ion
orbital
nucleus
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an atom or group of atoms that has gained or lost one or more electrons and is now either positively or negatively charged
isotope
ion
orbital
nucleus