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36 Cards in this Set

  • Front
  • Back
acrivation energy
energy required for chemical REACTION
CATALYST
substance that increases the rate of a chemical reaction
valence electrons
electrons that are in the outer most energy level of an atom
polyatomic ion
group of covalently bonded atoms that carry a charge
electron affinity
an atom to attract electrons
double replacement
chemical reaction in which different atoms of 2 compounds replace each other
Chemical Bonding
conbineing the atoms of elements to form a new substance
diatomic element
elements whose atoms can form covalent bond with an atom of the same element
decomposition
a chemical reaction when a complex substance is broken down to a simpler substance

covalent bond
type of bond in which electrons are shared
kenetics
energy of motion
exothermic
chemical reaction that occurs easily
endothermic
chemical reaction in which heat is absorbed by reactant
metallic bond
bond formed by atoms of metal
oxidation number
number of electron an atom gains, loses or shares when it forms a chemical bond
synthesis
2 or more simple substances combine to form a new more complex substance
reactants
substance that enters into a chemical reaction
products
substance produced by a chemical reaction
Law of conservation of Mass states
the number of atoms of an element must be the same on both sides of an equation
ionic
type of bond in which electrons are transfered
Law of conservation
energy can neither created nor destroyed
Chemical Change
process when a substance becomes a new substance
valence
electrons on the outer most shell of an atom
increase the rate of reaction
increase temperature
chemical change
process when substance undergoes a physical and chemical change and forms a new substance
synthesis
complex sunstance is put together with a simpler substance
streak
color of mineral whenit is powdered
single replacement
chemical reaction in which a single element replaces one element in a compound
decompositions
chemical reaction in which a complex substance breaks down into 2 or more substance
oxidation
the number of electrons an atom gains, loses, and shares
double replacement
a reaction in which elements in two different compouonds switch places
chemical lattice
regular and repeating arrangemnet of atoms
positive ion
an atom that loses electron
surface area
powder reacts faster than a solid
covalent bond
bonding that involves the sharing of electrons
negative ion
an atom that gains an electron