Singapore's only H2 Chemistry app

Meet Shifu. Your H2 Chem Catalyst.

Shifu lowers your activation energy to get an A.
Study smarter, faster, on exactly what you need.

Request early access
Shifu revision notes
Shifu practice
Shifu test mode

Built by a tutor with over 10 years of experience helping over 400 students improve.

Get the highlights.
Built for you.
See your weakness across the entire syllabus in one glance.
AtomicStructureBondingGaseousStateMoleConceptPeriodicTableEnergeticsKineticsEquilibriaAcid-BaseSolubilityOrganicElectro-chemistryTransitionMetals
Study smarter, faster.
Shifu explains why you’re wrong, provides hints when you’re stuck, and shows the exact marking points you need to score.

The boiling point of methane is −161.5°C while that of neon is −264°C.

Why is the boiling point of methane greater than that of neon?

AMolecules of methane have a larger surface area to form stronger intermolecular forces than those of neon
Correct. The tetrahedral CH4 molecule has a larger surface area than a spherical Ne atom. Larger surface area increases polarisability and the strength of London dispersion forces, raising the boiling point.
BA molecule of methane has more electrons than an atom of neon.
Incorrect. CH4has 6 (C) + 4×1 (H) = 10 electrons; Ne also has 10 electrons. They have the same electron count, so this cannot explain the difference in boiling point.
CA molecule of methane has a greater relative molecular mass than an atom of neon.
DMolecules of methane form hydrogen bonds, but those of neon do not.
One size fits you.
Fully customise your practice. Pick chapters, set question counts, choose your speed — Shifu builds the perfect test in seconds.
← Test Me
MCQ
10
Structured
5
Speed
1x
0QUESTIONS
0:00TIME
Start
Chapters
PHYSICAL CHEMISTRY
Mole Concept
Atomic Structure
Chemical Bonding
Gaseous State
Qs 1 / 1945:00Exit
MCQMOLE CONCEPT
1 A 50.00 cm3 of a solution of 0.300 mol dm−3 MoOx2− was reduced to Mo3+ using Zn powder. The filtrate required 45.00 cm3 of 0.200 mol dm−3 acidified KMnO4 to revert to its original form of MoOx2−.
What is the value of x?
A1
B2
C3
D4
Hint
Check Answer
Study at your pace.
Shifu teaches you from the start, refreshes you with summaries and prepares you with last minute exam pointers.
I have
Exam tomorrow
To revise
To learn
Physical Chemistry
Mole Concept›
Atomic Structure›
Chemical Bonding›
Gaseous State›
Chemical Equilibria›
Acid-Base Equilibria›
Acid-Base Equilibria II›
Solubility Equilibria›
Energetics›
Enthalpy and Energy Changes
Bond Energy and Lattice Energy
Hess' Law and Energy Cycles
Entropy
Gibbs Free Energy and Spontaneity
Reaction Kinetics›
Study what matters. Skip what doesn't.
Shifu Dashboard
Questions? Answers.
Is this for the new 9476 syllabus?▾
Yes. Every question, topic, and mark scheme is aligned to the 2026 syllabus.
I’m failing badly. Is it too late to start?▾
Students have gone from U at prelims to A at A-Levels. Shifu finds your weakest topics first so every hour counts.
How is this different from just doing TYS?▾
TYS gives you questions. Shifu tells you which questions to do, why you got them wrong, and what to fix next. It’s the difference between drilling blind and drilling smart.
Can I use it on my phone?▾
Yes. Works on any phone or tablet. Study on the MRT, at 2am, wherever.
I’m a private candidate. Will this work without a school?▾
Shifu is your school notes, tutor, and question bank in one app. No teacher required.
Is Shifu just another ChatGPT wrapper?▾
No. Shifu is built specifically for the H2 Chem syllabus, focusing on the content, keywords, and questions needed for A-Levels.

Stop re-reading. Start learning.

Try one concept. See how it feels. Invite-only — limited spots.

Request early access