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Law of Conservation of Mass- Mass is not created nor destroyed just transferred
A balanced equation demonstrates that reactants are completely converted to products.
Reactants-the compounds that exist before a reaction has occurred.
Products-The compounds that exist after the reaction has occurred.
Coefficients-The number in front of a compound, element or ion. Determines the number of moles of that species.
Note-Chemist do not write 1's, we just write the formula. It does count as a 1, but it is not there.
Reading a chemical reaction.
2H2(g) + O2(g) è2H2O(l)
2 moles of hydrogen gas reacts with 1 mole of oxygen gas to form 2 moles of liquid water.
+means reacts with èmeans to form
Here are some balancing videos to help you through this.
Balancing these Decomposition Reactions
Balancing these Synthesis Reactions
Balancing these Single Replacement Reactions
Balancing these Double Replacement Reactions
Balancing these Acid Base Neutralization Reactions
Past Regents Balancing Questions- Follow link for answers