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17 Cards in this Set
- Front
- Back
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chemical reaction
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change in matter in which different chemical substances are created by either breaking or forming a chemical bond
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diatomic molecule
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2 atoms bonded together
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metallic bond
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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) |
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atom
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smallest particle of an element that still has properties of that element
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ionic bond
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electromagnetic force between ions of opposite charge
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triatomic molecule
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3 atoms bonded together
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covalent bond
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share electrons in pairs, electrons exist in both electron clouds
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molecule
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smallest particle of a compound that still has properties of that compound
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crystals
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a solid in which the particles form a repeating pattern
-structure & properties depend on what elements make it up & bonds |
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compound
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combination of 2 or more elements by chemical means
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Octet Rule
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elements bond to form the most stable structure
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weak force bond
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attraction of a positive nucleus and a negative electron cloud of another atom attract
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covalent bond crystals
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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 |
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type of chemical reactions
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either absorb (endothermic) or release (exothermic) energy
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ionic bond crystals
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EMF holds together
metal and non metal high melting point brittle dissolve in water conduct electricity salt |
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chemical reaction examples
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digestion
photosynthesis rusting burning |
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chemical formula
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group of symbols that represent a compound
-shows elements & ratio |
