chemistry / Reactions & Quantities / free

Stoichiometry

Balance the ingredients of a reaction and keep atoms accounted for.

Follow the cause1 / 3

Atoms must be conserved. Reactants and products can rearrange bonds, but each element must have the same atom count on both sides.

reaction accounting3 complete batches

Focus the idea

complete batches3

H₂O made6

limitingbalanced

leftovers0 H₂ · 0 O₂

Hydrogen molecules 6Oxygen molecules 3

Try a ratio

Each batch consumes 2 H₂ and 1 O₂. The current amounts match the recipe.

Balanced coefficients preserve atoms. The limiting reactant is the first ingredient to prevent another complete reaction batch.

04 / PRACTICE

Make the chemistry yours.

0 / 3 checked

Answer from the model, then use the explanation to connect the particle picture to the chemical rule.

CHECK 1 / 3