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IPC

Chapters 19, 20, & 21

QuestionAnswer
Avogardro's Number The number of atoms in the atomic mass of an element, or the number of molecules in the formula mass of a compound when these masses are expressed in grams.
Chemical Bond an attraction between two or more different atoms that includes atoms that binds them together.
Chemical Formula a representation of a compound that includes the symbols and numbers of atoms in the compound.
Covalent Bond a type of chemical bond that is formed when to atoms share electrons.
Diatomic Molecule a molecule that has only two atoms of the same element.
Energy Level a region around the nucleus of an atom where electrons are most likely to be found; only a certain number of electrons can be found in each energy level of an atom.
Formula Mass determined by adding up the atomic mass units of all the atoms in the compound; a way to compare the masses of molecules of different compounds.
Ionic Bond a type of chemical bond between atoms that gained or lost electrons; a bond between ions.
Ion an atom that has an electrical charge.
Monatomic Ion ions that contain only one type of atom.
Octet an atom's eight valence electrons.
Polyatomic Ion ions that contain more than one type of atom.
Polymer a large molecule that is composed of repeating smaller molecules called subunits and monomers.
Subscript a number in a chemical formula that shows the number of a type of atom.
Valence Electrons the electrons in an atom that are involved in the formation of chemical bonds.
Balance occurs when the number and type of atoms on the reactant's and product's sides of a chemical equation are equal.
Chemical Change a change in a substance that involves the breaking and reforming of chemical bods to make a new substance or substances.
Chemical Equation chemical formulas and symbols that represent a chemical reaction.
Chemical Reaction the breaking of bonds to form new substance (called the products); atoms are rearranged in a chemical reaction.
Coefficient a number placed in front of a chemical formula to make the number of atoms on each side of a chemical equation equal.
Conservation of atoms or Conservation of Mass principle that states the number of each type of atom on the reactant's side must be equal to the number of each type of atom on the product's side of a chemical equation.
Excess Reactants a reactant that is not completely used up.
Hydrochloric Acid a highly acidic substance your stomach normally produces to help you break down food.
Limiting Reactant the reactant that is used up first in a chemical reaction.
Percent Yield the actual yield of product in a chemical reaction divided by the predicted yield, and multiplied by one hundreds to get a percent.
Physical Change change in the physical properties of a substance.
Product substance that are produced in a chemical reaction from reactants.
Reactant a substance that enters into and is altered in the course of a chemical reaction.
Addition Reaction a chemical reaction in which two or more substances combine to form a new compound.
Combustion Reaction a reaction in which a substance combines with oxygen, releasing large amounts of energy in the form of heat and light.
Decomposition Reaction a chemical reaction in which a single compound is broken down to produce two or more smaller compounds.
Dissolution Reaction a reaction that occurs when an ionic compound dissolves in water to make an ionic solution.
Double - Displacement Reaction a reaction in which ions from two compounds in a solution exchange places to produce two new compounds.
Exothermic Reaction occurs when less energy is required to break the bonds in reactants that is released when bonds are formed to make new products.
Insoluble a term to describe a substance that does not dissolve in water.
Polymerization the production of a very large molecule by a series of synthesis reactions.
Precipitate substance formed when one of the compounds in a double - displacement reaction is insoluble, or does not dissolve in water.
Single - Displacement Reaction a reaction which one element replaces a similar element in a compound.
Created by: Kaitlyn Finch
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