Balancing Chemical Equations Video Lessons

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Concept: Balancing Chemical Reactions

Problem: Which quantity or quantities must always be the same on both sides of a chemical equation?  Check all that apply.a) the number of moles of each kind of molecule b) the number of atoms of each kind c) the sum of the masses of all substances involvedd) the number of molecules of each kind

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Balanced equation → follows Law of conservation of mass

  • number of atoms of each element must be the same for both sides of the chemical equation
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Problem Details

Which quantity or quantities must always be the same on both sides of a chemical equation?  Check all that apply.


a) the number of moles of each kind of molecule 

b) the number of atoms of each kind 

c) the sum of the masses of all substances involved

d) the number of molecules of each kind

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