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ch 13,14, 15 vocab

chemical bonding joining of atoms to form new substances
chemical bond interaction that holds two atoms together
valence electron electron in the outermost energy level of an atom
ionic bond a bond that forms when electrons are transfered from one atom to another atom
ions charged particles that form when atoms gain or lose electrons
cyrstal lattice repeating 3 dimensional pattern formed when ions bond
covalent bond forms when atoms share one or more pairs of electrons
molecule consists of two or more atoms joined in a definite ratio
metallic bond bond formed by attraction between positively charged metal ions and electrons in the metal
chemical reaction a process in which one or more substances change to make one or more new substances
precipitate solid substance that is formed in a solution
chemical formula shorthand way to use chemical symbols and numbers to represent a substance
chemical equation uses chemical symbols and formulas as a shortcut to describe a chemical reaction
reactants starting materials in a chemical reaction
products substances formed from a chemical reaction
law of conservation of mass states that mass is neither created nor destroyed in ordinary physical and chemical changes
synthesis reaction reaction in which two or more substances combine to form one new compound
decompostition reaction reaction in which a single compound breaks down to form simpler substances
single-displacement reaction reaction when an element replaces another element thinhibat is part of another compound
double- displacement reaction a reaction in which ions from two compounds exchange places
exothermic reaction a chemical reaction in which energy is released
endothemic reaction a chemical reaction in which energy is taken in
law of conservation of energy states that energy cannot be created or destroyed
activation energy the smallest amount of energy that molecules need to react
inhibitor a substance that slows down or stops a chemical reaction
catalyst a substance that speeds up a chemical reaction without being permenatly changed
chemical bond combining of atoms to form molecules or compounds
ionic compounds compounds that contain ionic bonds
covalent compounds compounds that form when a group of atoms shares electrons
acid any compound that increases the number of hyronium ions when dissolved in water
indicator a substance that changes color in the presence of an acid or base
base any compound that increases the number of hydroxide ions when dissolved in water
neutralization reaction the reaction between acids and bases
pH a measure of the hyronium ion concentration in a solution
salt ionic compound formed from the positive ion of a base and a negative ion of an acid
organic compounds covalent compounds of carbon-based molecules
hydrocarbons organic compounds that contain only carbon and hydrogen
carbohyrdates biochemicals that are composed of one or more simple sugar molecules bonded together
lipids biochemicals that do not dissolve in water
proteins biochemicals that are composed of amino acids
nucleic acids a molecule made up of nucleotides
Created by: kfran0112