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17 Cards in this Set

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chemical reaction
change in matter in which different chemical substances are created by either breaking or forming a chemical bond
diatomic molecule
2 atoms bonded together
metallic bond
electrons leave their atoms and form one general electron cloud in which all atoms share
stable positive ion
metal and metal
spaces in between cause it to be ductile and malleable
electrons free to move (conductive)
atom
smallest particle of an element that still has properties of that element
ionic bond
electromagnetic force between ions of opposite charge
triatomic molecule
3 atoms bonded together
covalent bond
share electrons in pairs, electrons exist in both electron clouds
molecule
smallest particle of a compound that still has properties of that compound
crystals
a solid in which the particles form a repeating pattern
-structure & properties depend on what elements make it up & bonds
compound
combination of 2 or more elements by chemical means
Octet Rule
elements bond to form the most stable structure
weak force bond
attraction of a positive nucleus and a negative electron cloud of another atom attract
covalent bond crystals
share electrons to bond together
very large molecules
"Macromolecules" "network crystals"
very hard
diamond
don't conduct electricity
high melting point
non metal and non metal
type of chemical reactions
either absorb (endothermic) or release (exothermic) energy
ionic bond crystals
EMF holds together
metal and non metal
high melting point
brittle
dissolve in water
conduct electricity
salt
chemical reaction examples
digestion
photosynthesis
rusting
burning
chemical formula
group of symbols that represent a compound
-shows elements & ratio