Chemistry
Balancing Equations by Changing Subscripts
Balancing a chemical equation by editing the subscripts inside a formula instead of the coefficients in front.
Quick check
Why students make it
Changing a subscript is an easy way to make atom counts match, but it secretly changes what the substance is.
The rule done right
Subscripts define the compound and cannot change. Balance only by adjusting the coefficients placed in front of each formula.
Related resources
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Balancing Chemical Equations Infographic -
Balancing Chemical Equations (Complete) Infographic -
Chemistry: The Mole Ratio in Reactions Infographic -
Chemistry: Limiting Reactant and Percent Yield Infographic - Balancing Chemical Equations Step-by-Step Cheat Sheet
- Stoichiometry & Molar Mass Cheat Sheet
- Chemical Naming & Formulas Cheat Sheet
- Science: Balancing Chemical Equations Worksheet
- Science: Chemical Reactions and Balancing Equations Worksheet
- Science: Stoichiometry Calculations Worksheet
- Science: The Mole and Avogadros Number Worksheet
- Balance Chemical Equations Tool
- Conservation of Mass Lab Tool
- Mole Converter & Gas Stoichiometry Tool
- Molar Mass & Stoichiometry Calculator Tool
- Stoichiometry Lab Lab
- Chemical Reactions Lab Lab
- Reaction Types Lab Lab