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ch 13,14, 15 vocab
| Question | Answer |
|---|---|
| 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
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