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Unit 5

QuestionAnswer
Oxidation Number the number of electrons that must be added to or removed from an atom in a combined state to convert into the elemental
Oxidation-Reduction Reaction any chemical change in which one species is oxidized(loses electrons) and another species is reduced(gains electrons)
Reactants a substance or molecule that participate in a chemical reaction
Coefficients a small whole number that appears as a factor in front of a formula in a chemical equation
Law of conservation of Mass the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes.
Combustion reaction the oxidation reaction of an element or compound,in which energy as heat is released
Decomposition reaction a reaction in which a single compound breaks down to form two or more simpler substance
Synthesis reaction a reaction in which tow or more substance combine to form a new compound
single displacement reaction a reaction in which one element or radical takes the place of another element or radical in a compound
double displacement reaction a reaction in which the ion of two compounds exchange places in an aqueous solution to form two new compound
Monatomic ions an ion formed from a single atom
nomeclature a naming system
Oxyanions a polyatomic ion that contains oxygen
formula mass the sum of the average atomic masses of all atoms represented in the formula of any molecule,formula unit,or ion
percent composition the percentage by mass of each element in a compound
empirical formula a chemical formula that shows the composition of a
chemical equation a representation of chemical reaction that uses symbols to show the relationship between the reactants and the product
word equation a equation in which the reactants and the product in a chemical reaction are represented by words
formula equation a representation of the reactants and product of a chemical reaction by their symbols or formula
reversible reaction a chemical reaction in which the product re-form the original reactants
Created by: er355333
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