(HT only) Use mole ratios calculated from masses to balance a symbol equation.

In the subtopic Using moles to balance equations (HT only), this learning objective focuses on (HT only) Use mole ratios calculated from masses to balance a symbol equation. It sits within Use of amount of substance in relation to masses of pure substances for AQA GCSE Chemistry 8462 Unit 4.3, so the explanation must stay anchored to quantitative chemistry rather than drifting into a general chemistry idea. Approved keywords to use include HT only, mole ratio. Balanced Equation. means a chemical equation that has the same number of each type of atom on both sides, reflecting the conservation of mass Avoid the mistake of students often confuse mass ratios with mole ratios when balancing equations, leading to incorrect calculations; instead, always ensure you are using the mole ratios derived from the coefficients of the balanced equation, not the masses of the reactants or products For exam answers, always identify and use the mole ratios from the coefficients in a balanced equation to relate the amounts of reactants and products