ch 13,14, 15 vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| chemical bonding | joining of atoms to form new substances
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| chemical bond | interaction that holds two atoms together
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| valence electron | electron in the outermost energy level of an atom
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| ionic bond | a bond that forms when electrons are transfered from one atom to another atom
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| ions | charged particles that form when atoms gain or lose electrons
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| cyrstal lattice | repeating 3 dimensional pattern formed when ions bond
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| covalent bond | forms when atoms share one or more pairs of electrons
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| molecule | consists of two or more atoms joined in a definite ratio
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| metallic bond | bond formed by attraction between positively charged metal ions and electrons in the metal
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| chemical reaction | a process in which one or more substances change to make one or more new substances
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| precipitate | solid substance that is formed in a solution
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| chemical formula | shorthand way to use chemical symbols and numbers to represent a substance
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| chemical equation | uses chemical symbols and formulas as a shortcut to describe a chemical reaction
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| reactants | starting materials in a chemical reaction
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| products | substances formed from a chemical reaction
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| law of conservation of mass | states that mass is neither created nor destroyed in ordinary physical and chemical changes
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| synthesis reaction | reaction in which two or more substances combine to form one new compound
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| decompostition reaction | reaction in which a single compound breaks down to form simpler substances
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| single-displacement reaction | reaction when an element replaces another element thinhibat is part of another compound
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| double- displacement reaction | a reaction in which ions from two compounds exchange places
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| exothermic reaction | a chemical reaction in which energy is released
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| endothemic reaction | a chemical reaction in which energy is taken in
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| law of conservation of energy | states that energy cannot be created or destroyed
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| activation energy | the smallest amount of energy that molecules need to react
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| inhibitor | a substance that slows down or stops a chemical reaction
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| catalyst | a substance that speeds up a chemical reaction without being permenatly changed
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| chemical bond | combining of atoms to form molecules or compounds
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| ionic compounds | compounds that contain ionic bonds
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| covalent compounds | compounds that form when a group of atoms shares electrons
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| acid | any compound that increases the number of hyronium ions when dissolved in water
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| indicator | a substance that changes color in the presence of an acid or base
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| base | any compound that increases the number of hydroxide ions when dissolved in water
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| neutralization reaction | the reaction between acids and bases
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| pH | a measure of the hyronium ion concentration in a solution
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| salt | ionic compound formed from the positive ion of a base and a negative ion of an acid
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| organic compounds | covalent compounds of carbon-based molecules
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| hydrocarbons | organic compounds that contain only carbon and hydrogen
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| carbohyrdates | biochemicals that are composed of one or more simple sugar molecules bonded together
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| lipids | biochemicals that do not dissolve in water
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| proteins | biochemicals that are composed of amino acids
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| nucleic acids | a molecule made up of nucleotides
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