Topic 8 Test Flashcards
substances that form when two or more elements bond together
compounds
electrons in the highest energy level
valence electrons
ease and speed with which an elmer combines or reacts with other substances
reactivity
do metals react with other metals
no
why are metals malleable and ductile
because the electrons are very free moving
metals are good conductors because….
the loose electrons
what do nonmetals react with
both nonmetals and metals
solid nonmetals are mostly _____ and ___
dull and britttle
all metalloids will be ____ at room temp
solid
a substance that can conduct electric current under some conditions but not under others
semiconductor
involves the attraction between ions of opposite charges
ionic bonding
an atom or group of atoms that has either a positive or negative charge
ion
ion made up of more than one atom
poly atomic atom
chemical bond formed when two atoms share electrons is called
covalent bond
when do covalent bonds usually happen
between two nonmetals
when is a molecule made
during a covalent bond
neutral group of atoms
molecule
forms hard brttike crystals that have high melting points
ionic bonds
low melting points
covalent bonds
study the parts in 8-4
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metals will ___ electron
lose
nonmetals will ____ electrons
gain