Chemistry Ch. 3 - Chemical Reactions and Stoichiometry
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Last updated 9:52 PM on 9/22/25
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6 Terms
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How to tell if a chemical reaction happened
When thereโs gas production, color change, heat exchange, etc
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Stoichiometry
Shows how much reactants and products were consumed/produced
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What are the general rules for balancing equations
1) Write the correct formulas on both sides
2) Start balancing whichever element is the lowest/most complex compound
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Atomic Weight
Weight of an element on the periodic table
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Formula/Molecular Weight
Weight of ionic/molecular compounds
Ex) NaCl = Na (22.99amu) + Cl (35.45amu) = 58.44 amu
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Mole
Amount of substance represented by avogadroโs number 6.022 ร 1023
Note 
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