Details Title: 8th Grade Study Guide Description: Important Vocabulary Chemistry Total Flash Cards: 14 Created: 05/12/2009 05:14:05		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Chemistry Flashcards
Cards in this set: Term       Chemistry Definition     study of matter,   its properties and its behavior Term       formula Definition       combination of symbols that represent elements in a compound  Term       reactants Definition     substance that enters into chemical reaction   ex. reactant + reactant = product H + O ----->H O   Term       coefficient Definition   number in front of the chemical formula in an equation tells how many moleclues or atoms of each ex. H + O --->2H O Term     subscript Definition   number in chemical formula that tells the number of atoms in a molecule   ex. H O Term     mixture Definition     2 or more substances that are mixed together but not chemically combined   ex, salad Term     chemical bond Definition     force that holds two atoms together Term     Law of Conservation of Matter Definition     matter cannot be created or destroyed in a chemical reaction Term       synthesis reaction Definition     2 or more simple substances combine to form a new more complex substance   ex. hydrogen + oxygen = water Term     decomposition reaction Definition     breaks down compounds into simpler products   ex. 2H O -->2H O + O Term     replacement reaction Definition   one element replaces another ina compound or 2 elements in different compounds trade places ex. 2CuO +C---->2Cu + CO Term     endothermic reaction Definition     absorbs energy in form of heat Term     exothermic reaction Definition     releases energy in form of heat Term Definition