WGU C165 Unit 4 Chemistry Exam questions with ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
verified answers ||\\//||
Matter - correct answer✔✔Anything that has mass and takes up space
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Atom - correct answer✔✔Smallest particle of an element
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Proton - correct answer✔✔A subatomic particle that has a positive charge and that is found
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in the nucleus of an atom
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Neutron - correct answer✔✔A subatomic particle that has no charge and that is found in
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the nucleus of an atom||\\//|| ||\\//|| ||\\//|| ||\\//||
Electron - correct answer✔✔A subatomic particle that has a negative charge ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
nucleus - correct answer✔✔Center of an atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Electron Cloud - correct answer✔✔a region around the nucleus of an atom where electrons ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
are likely to be found
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Valence Electrons - correct answer✔✔electrons in the outermost shell ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Element - correct answer✔✔pure substance that consists entirely of one type of atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Atomic Number - correct answer✔✔the number of protons in an atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, Atomic Symbol - correct answer✔✔A one or two letter abbreviation for an element
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Compound - correct answer✔✔A substance made up of atoms of two or more different ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
elements joined by chemical bonds ||\\//|| ||\\//|| ||\\//|| ||\\//||
Chemical Bonds - correct answer✔✔An attraction between two atoms resulting from a
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sharing of outer-shell electrons or the presence of opposite charges on the atoms. The
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bonded atoms gain complete outer electron shells.
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Molecules - correct answer✔✔Groups of two or more atoms held together by chemical||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
bonds
Chemical - correct answer✔✔any substance that has a definite composition
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organic compounds - correct answer✔✔carbon-based molecules
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Pure Substance - correct answer✔✔A substance made of only one kind of matter and
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having definite properties.
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Mixture - correct answer✔✔material composed of two or more elements or compounds
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that are physically mixed together but not chemically combined
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Heterogeneous Mixture - correct answer✔✔A mixture in which different materials can be ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distinguished easily ||\\//||
Homogeneous Mixture - correct answer✔✔A mixture in which substances are evenly ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distributed throughout the mixture ||\\//|| ||\\//|| ||\\//||
verified answers ||\\//||
Matter - correct answer✔✔Anything that has mass and takes up space
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Atom - correct answer✔✔Smallest particle of an element
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Proton - correct answer✔✔A subatomic particle that has a positive charge and that is found
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in the nucleus of an atom
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Neutron - correct answer✔✔A subatomic particle that has no charge and that is found in
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the nucleus of an atom||\\//|| ||\\//|| ||\\//|| ||\\//||
Electron - correct answer✔✔A subatomic particle that has a negative charge ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
nucleus - correct answer✔✔Center of an atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Electron Cloud - correct answer✔✔a region around the nucleus of an atom where electrons ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
are likely to be found
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Valence Electrons - correct answer✔✔electrons in the outermost shell ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Element - correct answer✔✔pure substance that consists entirely of one type of atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Atomic Number - correct answer✔✔the number of protons in an atom ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, Atomic Symbol - correct answer✔✔A one or two letter abbreviation for an element
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Compound - correct answer✔✔A substance made up of atoms of two or more different ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
elements joined by chemical bonds ||\\//|| ||\\//|| ||\\//|| ||\\//||
Chemical Bonds - correct answer✔✔An attraction between two atoms resulting from a
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
sharing of outer-shell electrons or the presence of opposite charges on the atoms. The
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
bonded atoms gain complete outer electron shells.
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Molecules - correct answer✔✔Groups of two or more atoms held together by chemical||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
bonds
Chemical - correct answer✔✔any substance that has a definite composition
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organic compounds - correct answer✔✔carbon-based molecules
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Pure Substance - correct answer✔✔A substance made of only one kind of matter and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
having definite properties.
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Mixture - correct answer✔✔material composed of two or more elements or compounds
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
that are physically mixed together but not chemically combined
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Heterogeneous Mixture - correct answer✔✔A mixture in which different materials can be ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distinguished easily ||\\//||
Homogeneous Mixture - correct answer✔✔A mixture in which substances are evenly ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
distributed throughout the mixture ||\\//|| ||\\//|| ||\\//||
