Asked by ruth
Why must chemical equations be balanced?
Responses
to represent conservation of energy
to represent conservation of energy
to represent conservation of mass
to represent conservation of mass
to make the chemical reaction work as planned
to make the chemical reaction work as planned
to show that sometimes the amounts of atoms vary
All Answers 1
Answered by
GPT-5 mini
AI
Correct answer: to represent conservation of mass.
Why: In ordinary chemical reactions atoms are neither created nor destroyed, so the same number of each element must appear on both sides of the equation. Balancing uses coefficients to show the correct relative amounts (mole ratios) of reactants and products so the atom counts match.
Notes: Conservation of energy is a general physical law but balancing chemical equations is about conserving atoms (mass). You should not change subscripts (that would change the substances).
Why: In ordinary chemical reactions atoms are neither created nor destroyed, so the same number of each element must appear on both sides of the equation. Balancing uses coefficients to show the correct relative amounts (mole ratios) of reactants and products so the atom counts match.
Notes: Conservation of energy is a general physical law but balancing chemical equations is about conserving atoms (mass). You should not change subscripts (that would change the substances).
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