Solveproblemsconservingmassfor chemicalreaction

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Unformatted text preview: (Continued) • Be able to identify properties and changes as physical or chemical – Know terms for changes of state: – Melting, freezing, vaporizing, condensation, sublimation, deposition • Chemical reaction: ‐ reactants: starting materials ‐ products: substances produced in reaction • Law of Conservation of Mass: Matter is neither created nor destroyed in a chemical reaction; atoms are simply rearranged. – Solve problems conserving mass for chemical reaction. Chapter 10: Energy kinetic energy (KE): energy associated with an object’s motion – Faster objects have higher KE. potential energy (PE): energy due to its position or composition (chemical bonds) heat: energy is transferred from a hotter substance to a cooler substance – Identify what lost heat and gained heat given different scenarios. Know the relative kinetic energy of solids, liquids, and gases. Endothermic versus Exothermic changes: – endothermic: a change requiring energy – exothermic: a change that releases energy – To determine for physical changes consider if the reactants have more or less ki...
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This document was uploaded on 03/22/2014 for the course CHEM 139 at Seattle Central Community College.

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