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Ch 4 vocab science
ch 4 vocab science
Question | Answer |
---|---|
the electrons with the highest energy | valence electrons |
includes the symbol of the element surrounded by dots; dots= valence electrons | electron dot diagram |
the force of attraction that holds atoms together as a result of the rearrangement of electrons between them | chemical bond |
an atom or a group of atoms that has an electric charge | ion |
Ions made up of more than one atom | polyatomic ions |
the attraction between two oppositely charged ions | ionic bond |
the resulting compound of an ionic bond; made up of positive and negitive ions; the total positive charge equal the negitive charge | ionic compound |
a group of symbols that shows the ratio of elements in a compound | chemical formula |
tell the ratio of the elements in a compound | subscrips |
an orderly, three-demensional arrangement of ions | crystal |
form between two nonmetals; the chemical bond formed when two atoms share electrons | covalent bond |
a neutral group of atoms joined by covalent bonds | molecule |
2 atoms sharing 2 pairs of electrons | double bond |
atons sharing three pairs of electrons | triple bond |
a compound made up of molecules | molecular compound |
a covalent bond where electrons are shared equally | nonpolar bond |
a covalent bond where atoms are shared unequally | polar bond |
an attraction between a positive metal ion and the electrons surrounding it | metallic bond |
a mixture made of two or more elements, at least one of which is metal | alloy |