Ace
Short answer: study chemistry by connecting what happens in the beaker, what the particles are doing, and how the equation shows it, for every topic. Explain each step of worked examples in your own words, practise mixed problems instead of one type at a time, and test yourself on mechanisms and concepts with questions rather than rereading your notes.
Why does chemistry feel so hard?
Chemistry educator Alex Johnstone argued that the subject is hard because it works on three levels at once (Johnstone, 1991):
- Macroscopic: what you can see and measure, like a colour change, a gas bubbling or a temperature rising.
- Sub-microscopic: what the atoms, ions and electrons are doing, which you can never see.
- Symbolic: the formulas, equations and curly arrows we use to describe both.
Lectures often jump between these levels in a single slide. If you memorise the symbols without picturing the particles, or the observations without the equation, the topic never clicks. The fix is to study all three together, on purpose.
How do you study chemistry effectively?
1. Link the three levels for every topic
For each reaction or concept, write three lines: what you'd observe, what the particles are doing, and the equation. For example: "the solution turns from blue to colourless" / "copper ions are reduced and leave the solution" / the half-equation. If you can't fill in one line, that's the gap to study.
2. Explain worked examples step by step
When you read a worked example, stop at each step and explain to yourself why it happens before reading on. In a classic study, students who generated explanations like this while studying worked examples learned considerably more than those who just read them (Chi et al., 1989). Saying "the mole ratio is 2:1 because…" out loud beats nodding along.
3. Learn the "why" behind trends
Electronegativity, reactivity, boiling points and acidity all follow from a few underlying ideas: nuclear charge, distance from the nucleus, shielding, bond polarity and intermolecular forces. Learn those principles once and dozens of facts follow from them, instead of being memorised one by one.
4. Mix your problems
Doing ten stoichiometry questions in a row feels productive because the method never changes. Exams mix them up. Rohrer and Taylor (2007) found that students who practised shuffled problem types did far better on a later test than students who practised in blocks. Mix moles, equilibrium and energetics in the same session.
5. Test yourself, don't reread
Close your notes and try to write out a mechanism, balance an equation or explain a trend from memory, then check. Retrieval practice like this beats rereading for long-term memory (Roediger & Karpicke, 2006). Our guide to the blurting method is a quick way to do it for a whole topic.
6. Play with the formulas
Formulas like PV = nRT or q = mcΔT make far more sense when you change one value and see what happens to the result. Interactive simulations help with exactly this; we cover the research in do interactive simulations help you learn? When your chemistry notes include a formula, Ace can build a small simulation from it and ask you to set the values that reach a target, then show how close you got.
7. Practise procedures in order
Titrations, preparing a standard solution, recrystallisation and reaction mechanisms are all sequences. Practise putting the steps in the right order and saying why each comes where it does. Ace's "put in order" questions are built from the steps in your own lecture material.
How do you study organic chemistry?
Organic chemistry has a reputation for being a memory test, but it rewards understanding more than almost any other topic. Focus on a small number of mechanism types (substitution, elimination, addition and so on) and understand why electrons move where they do: from electron-rich to electron-poor. Draw mechanisms from memory with curly arrows every few days, and keep a running list of reactions organised by functional group. When a new reaction appears, ask which mechanism type it belongs to before memorising it. For more on spacing these reviews, see our spaced repetition schedule.
To practise chemistry from your own lecture slides, upload them to Ace. You'll get multiple-choice, ordering and labelling questions, and simulations where your notes have a formula, with every answer showing the line from your material it came from.
Frequently asked questions
What is the best way to learn chemistry fast?
Focus on understanding the few principles that explain many facts, then test yourself with mixed problems. Speed comes from understanding, not from memorising more.
Why is organic chemistry so hard?
It involves a lot of reactions, and students often try to memorise each one separately. Grouping reactions by mechanism and understanding electron movement makes the volume manageable.
Should I memorise the periodic table?
Know the common elements and where the groups and periods are, but focus on the trends and why they happen. That's what exam questions test.
How do I get better at chemistry calculations?
Write out every step with units, practise mixed calculation types, and check whether your answer makes sense in size and sign before moving on.
Sources
- Johnstone, A. H. (1991). Why is science difficult to learn? Things are seldom what they seem. Journal of Computer Assisted Learning, 7(2), 75–83.
- Chi, M. T. H., Bassok, M., Lewis, M. W., Reimann, P., & Glaser, R. (1989). Self-explanations: How students study and use examples in learning to solve problems. Cognitive Science, 13(2), 145–182.
- Rohrer, D., & Taylor, K. (2007). The shuffling of mathematics problems improves learning. Instructional Science, 35(6), 481–498.
- Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255.
