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Drill – 10/4 What is Chemistry? What does the word “conservation” mean? Objective SWBAT to define the Law of Conservation of Mass and Energy Law of Conservation of Mass and Energy Mass and energy are neither created nor destroyed during ordinary chemical reactions or physical changes. They are just rearranged! The mass of all the reactants is equal to the mass of all the products. The energy that goes in to the reaction is equal to the energy that comes out. What is energy? Energy is the capacity to do work or to produce heat. Forms of Energy: Potential Energy = stored energy Kinetic Energy = energy of motion Transfer of Energy 1. 2. 3. 4. Endothermic – energy is absorbed (in) Exothermic – energy is released (exit) Sublimation Condensation Melting Deposition FYI There will be a Unit 2 Quiz next Tuesday on: Types of matter – element, compound, homogenous mixture, heterogeneous mixture Phases/States of matter – solid, liquid, & gas Physical & Chemical changes Separations Law of Conservations of Mass & Energy