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Before balancing a chemical equation, what should be checked first?

Answer and explanation

Correct answer: The number of atoms of each element on both the reactant and product sides

The first step in balancing a chemical equation is to count the atoms of every element on the reactant and product sides. By conservation of mass, the number of atoms of each element must be the same on both sides. This is achieved by changing coefficients, not the subscripts in chemical formulae. Colour or smell is not relevant to balancing an equation.

Related tags

ScienceClass 10Chemical ReactionsChemical EquationsBalancing EquationsConservation Of Mass

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