Getting your head around dense scientific terminology requires focused, individual guidance. A Year 11 Chemistry tutor in Sydney can spot exactly where an answer loses detail and show them a clearer way through it.
Year 11 Chemistry brings a lot of new content at once. With so much that’s unfamiliar, the students who do best are the ones whose conceptual understanding is grounded before the calculations pile on.
What Year 11 Chemistry covers, and where students get caught out
The current Year 11 course has four modules: Properties and Structure of Matter, Introduction to Quantitative Chemistry, Reactive Chemistry, and Drivers of Reactions. Together they move from atoms and bonding, through measuring chemicals, to predicting how and why reactions happen.
The topic that catches the most students out is the mole and the calculations built on it.
What a mole actually is
A mole is a counting unit, like a dozen, only far bigger: one mole of anything contains about 6.022 × 10²³ particles. Chemists use it because atoms are too small to count one by one, but they can be weighed.
A worked example: how many moles are in 36 g of water?
| Step | Working |
|---|---|
| Find the molar mass of H₂O | 2 × 1.008 + 16.00 = 18.02 g/mol |
| Use n = m ÷ M | n = 36 ÷ 18.02 |
| Answer, with units | n ≈ 2.0 mol |
Once a student understands what a mole is, the calculations stop being a formula to memorise. They become a way to count particles, and to predict how much of each chemical a reaction will use or make.
The foundations that hold the rest up
| Foundation | Why it matters later |
|---|---|
| Bonding: ionic, covalent and metallic | Explains properties, and which reactions are likely |
| The mole and molar mass | Every quantitative question depends on it |
| Balanced equations | Give the mole ratios for every calculation |
| Energy changes in reactions | Help explain why some reactions happen and others don’t |
How we ground the concepts in an online session
Every student starts with a free 30-minute intro session, where the tutor learns how your child is feeling about school, the marks they’ve been getting and want to get, what they’re working towards, and the rhythm of their week.
Sessions run on Google Meet with a shared digital whiteboard. Before any calculation, the tutor checks that your child can explain the idea behind it, questioning back and forth until the concept is secure.
How to lay out a Chemistry calculation for full marks
- Write the balanced equation first, if there is one.
- State the formula you’re using, such as n = m ÷ M.
- Show every step, with units at each stage.
- Use mole ratios from the balanced equation; masses don’t follow those ratios.
- Give the final answer with units and sensible significant figures.