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Bundle 3: Matter Types of Reactions
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What is the density of the mineral sample?
WARM UP 10/10/17 Solve the following problem in your IAN Notebook; A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 [g] and a volume of 2.2 [mL]. What is the density of the mineral sample?
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Synthesis Reaction Two separate elements or molecules chemically join to form one new compound Ex. 2H2 + O2 2H2O N2 + 3H2 2NH3 (ammonia)
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Decomposition Reaction
One molecule is broken into different elements or compound + element. Ex. 2H2O2 2H2O + O2 Hydrogen peroxide CaCO3 CaO + CO2 Limestone
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Combustion Reaction A substance reacts with oxygen (O2) to produce heat and light. Ex. C + O2 CO2 C6H12O6 + O2 CO2 + H2O What substance must be present for a combustion reaction to occur? OXYGEN GAS
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Exothermic Reaction An Exothermic Reaction releases heat during the reactions and does NOT require any heat to start the reaction. Heat exits the reaction No heat needed to start reaction
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Endothermic Reaction An Endothermic Reaction requires heat to get started and absorbs or draws in heat during the reaction. Heat to get started Heat goes INTO the reaction
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Endo vs. Exo Endothermic – Energy of the products is greater than the reactants Exothermic – Energy of the products is less than the reactants
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Fusion Reaction
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Fission Reaction A nuclear reaction that occurs when a heavy atom splits into smaller atoms releasing an enormous amount of energy.
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