Transcription of NOTES: CHEMICAL REACTIONS
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NOTES: CHEMICAL REACTIONS
1 CHAPTER 11 NOTES: CHEMICAL REACTIONS VOCABULARY: Products what is formed in a CHEMICAL reaction; right of arrow Reactants what goes into a CHEMICAL reaction; left of arrow yields + and (s) solid (l) liquid (g) gas (aq) aqueous only works when dissolved in water Catalyst a substance that speeds up a reaction but is not itself consumed; provides an easier reaction pathway that requires less activation energy Activation Energy (Ea) energy necessary to initiate a CHEMICAL reaction heat Pt ENERGY OF CHEMICAL REACTIONS : Exothermic Reaction: H is Endothermic Reaction: H = + (heat is a product ) (heat is a reactant ) Energy Time Energy Time 2 BALANCED CHEMICAL REACTIONS Law of Conservation of Matter: matter cannot be created or destroyed in a CHEMICAL reaction WORD FORMULA BALANCED equations 1. word equation: Hydrogen gas reacts with oxygen gas to form water formula equation: ____ H2 + O2 H2O _____ diagram: H H + O = O O + O H H H H H H balanced reaction ____2 H2 + O2 2 H2O _____ 2.
2 BALANCED CHEMICAL REACTIONS Law of Conservation of Matter: matter cannot be created or destroyed in a chemical reaction WORD FORMULA BALANCED EQUATIONS 1. word equation: Hydrogen gas reacts with oxygen gas to form water formula equation: ____ H
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