wgu - mod 7 science Word Scramble
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Question | Answer |
The smallest particle of an element tht has all of the element's chemical properties. | atoms |
an elementary or composite particle smaller than an atom. | subatomic particles |
a group of atoms held tightly together by covalent bonds. | molecules |
different forms of an element whose atoms contain the same number of protons but different numbers of neutrons. | isotopes |
any material that is made up of only one type of atom | elements |
the attraction between two atoms that holds them together in a compound. | chemical bonds |
a chart in which all known elements are listed in order of atomic number | periodic table |
the mass of a closed system wil remain constant, regardless of the processes acting inside the system. | conservation of mass |
the total amount of energy is an isolated system remains constant. a consequence of this law is that energy cannot be created or destroyed | conservation of energy |
a chemical change | chemical reactions |
the standard unit of atomic mass, which is equal to one-twelfth the mass of the common atom of carbon, arbitrarily given the value of exactly 12. | atomic mass unit (amu) |
the process whereby a reactant loses one or more electrons. | oxidation |
the process whereby a reactant gains one or more electrons | reduction |
a substance that increases the rate of a chemical reaction by lowering its activation energy | catalyst |
a substance that donates hydrogen ions | acid |
a substance that accepts hydrogen ions | base |
matter that has a definite volume and a definite shape | solid |
matter that has a definite volume but no definite shape, assuming the shape of its container | liquid |
matter that has neither a definite volume nore a definite shape, always filling any space available to it. | gas |
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