wunder beta📘 Solubility predicts a phase change
Mixing aqueous solutions asks whether a new solid, gas, or weak product will form — not whether ions merely exist.
4
lessons
~20 min
to learn
Adults
level
What you’ll learn
- Predict the mixtureList dissolved ions and apply solubility rules with exceptions.Dissolving is not reacting; product solubility drives the phase change.
- Build and balanceExchange partners, write neutral formulas, and assign states.Correct formulas come before coefficients and state symbols.
- Write ionic equationsSplit strong electrolytes, cancel spectators, and recognize no reaction.Only unchanged aqueous ions cancel; a solid stays intact.
- Check the predictionBalance atoms and charge in the net ionic result.A fixed sequence makes the prediction auditable instead of memorized.
Questions this course answers
What creates a precipitate?
A precipitate is a solid product formed from dissolved species.
When should you assign physical states?
Correct formulas must be known before solubility rules can be applied.
Which species is a spectator ion?
Spectators remain in the same form and state through the reaction.
What does no net ionic reaction mean?
If every species cancels, mixing caused no net chemical change.
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