Question Detail
Question
Which of the following cannot be changed while balancing a chemical equation?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The subscripts in a chemical formula define the compound's identity (e.g., H₂O vs H₂O₂). Changing them would change the substance itself. To balance an equation, only the coefficients (the numbers in front of formulas) can be adjusted.
Hint
Changing which part of a formula would alter the chemical itself, not just the quantity?