Uni+ – Interactive Periodic Table & Chemical Equation Balancer

Chapter

Notes

Intensive study notes (PDF) for Topics 1–6.

Topic 1: Planet Earth

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Topic 2: Microscopic world 1

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Topic 3: Metals

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Topic 4: Acids and bases

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Topic 5: Fossil fuels and carbon compounds

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Topic 6: Microscopic world 2

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Games

Grade 9-12 Chemistry Tools & Labs

Atom Ninja

Build atoms in the lab and play Atom Ninja — slower movement, longer time, and correct targets appear more often.

Chem Catch

Read the ionic question and shoot the fish with the correct formula — a fast ionic-formula practice game.

Lab & Hazard Match

Memory game: match bilingual lab apparatus names to pictures and OSHC chemical hazard labels.

Flame Test Fireworks

Design metal-ion burst patterns, launch them over night-sky scenes, and download your flame-test firework display.

Interactive Lab

Choose a lab simulation to explore bonding and structure

1

Ionic

Build ionic lattice structures and explore ionic compound formation.

2

Covalent

Draw covalent bonds and explore covalent compound structures.

3

Sandbox

Simulate micro-structure and compare covalent substance properties.

Worksheets

Choose a worksheet type

1

Equation practice

Generate balanced equation worksheets.

2

Isotopes & relative atomic mass

Isotope abundance and RAM calculations.

3

Atomic structure quiz

Practise element symbols, shells, and electron placement for elements 1-20.

4

Microscopic World I

HKDSE questions: atomic structure, periodic table, bonding, and properties of substances.

5

Metals

HKDSE-style questions: uses, extraction, reactivity, reactions, displacement, corrosion, and mole calculations.

Summary

Choose a topic to view infographic summaries