Chemistry 12 tutoring

If your child is taking Chemistry 12 right now

Chemistry 12 has a particular reputation, and it is deserved. It is not that any single topic is impossible; it is that the course keeps asking students to hold a whole system in their head — a reaction going in both directions at once, a solution with several species competing — and to reason about what happens when something changes.

Students who succeeded in Chemistry 11 by being organised and thorough often find their usual approach stops working around the equilibrium unit. Reviewing notes does not help much, because the difficulty is not recall. This is the course where working through problems out loud with someone, and being challenged on the explanation, makes the clearest difference.

What the course covers

The chemistry is about the behaviour of reacting systems. Students study reaction rates and the factors that change them, then equilibrium: the idea that many reactions do not run to completion but settle into a balance between forward and reverse processes, described by an equilibrium constant and shifted predictably when conditions change.

Solubility follows, treating dissolving as its own equilibrium and asking when a precipitate will form. Then comes the largest section for most students: acids and bases, including strong and weak behaviour, the pH scale, buffers, and titration curves. Most courses close with oxidation-reduction chemistry and electrochemistry — tracking electron transfer, balancing redox equations, and understanding how that chemistry produces electricity in a cell.

Where students commonly get stuck

Equilibrium is the first and largest hurdle, and specifically the shift from calculating to predicting. Students can compute an equilibrium constant and still be unable to say what happens when the volume is halved, because that requires reasoning about the system rather than substituting into a formula. Organised setups — writing initial amounts, changes, and final amounts in a table — usually resolve half the problem on their own.

Weak acids and bases are the second. Strong acids behave simply; weak ones require an equilibrium calculation, and students frequently apply strong-acid reasoning where it does not belong. Logarithms compound this, because pH work depends on a math skill that is itself often shaky.

Buffers and titration curves are the third: they demand that a student combine equilibrium ideas with an evolving mixture, and reading a curve correctly means understanding which species dominate at each stage. Redox is a different kind of difficulty — mostly bookkeeping, but unforgiving. Losing track of electrons or of which species is oxidised produces a balanced-looking equation that is wrong. Explanation questions are the final trap: precise chemical language earns marks that vague descriptions do not.

How sessions are structured for this course

Sessions are conversational by design. We put a scenario in front of the student and ask what will happen and why before touching any numbers. That surfaces misconceptions immediately, and it rehearses exactly the kind of question that costs marks on tests.

For calculations we drill a consistent structure: write the balanced equation, identify every species present, organise the information, then solve. We also work directly on the logarithm and algebra skills that acid-base work assumes, because treating them as "math problems" and hoping they resolve elsewhere does not work.

Because the units in this course interlock, review is continuous rather than saved for the end — solubility questions revisit equilibrium, titration revisits both. Before major tests we run timed mixed practice and go through written explanations line by line. Sessions are available in person across Metro Vancouver or online over Zoom with an interactive whiteboard.

Related pages

This course is part of our chemistry tutoring. Other chemistry courses we support:

• Chemistry 11 tutoring