Updates
What is new on chermistry.com — added whenever something new goes live.
Latest updates
- New
Your marked homework, in one place
The Bridging page has a new My submissions tab: sign in, and you can see everything you handed in and download Mr Cher's marked copy once it is ready.
Take a look → - Improved
Question banks now match the P1 Driller
When a teacher takes a question out of the P1 Driller as out of syllabus or faulty, the Chemistry, Physics and Biology question banks now show the same: out-of-syllabus questions are marked, and faulty ones are hidden until they are fixed.
Take a look → - New
School question banks for Physics and Biology
The Physics and Biology school prelim question banks now have cards on the main menu, and Biology has its own Question Banks section with the SG, international and school banks. Both school banks now open with the usual notes bar at the top.
Take a look → - Improved
Question banks now look and work the same
Every question bank now has the same one-row filter bar, and the syllabus tick-boxes turn questions green when they are relevant and red when they are not. The Biology question bank now has the Biology notes menu bar.
Take a look → - New
Biology P1 Driller is here
Drill O-Level Biology Paper 1 multiple choice every day, for G3 Pure Biology or G3 Science (Biology). Every question is marked at once and explained, with most questions on the outcomes the 2026 paper did not test.
Take a look → - Improved
Biology question bank: learning-outcome tags
Every Biology question is now tagged to the official learning outcomes for G3 Pure, G3 Science and G2 Science. Filter by learning outcome, and questions outside your course are marked OOS and kept out of the MCQ Driller.
Take a look → - New
SG Biology Question Bank
Every Singapore O Level and N(A) Biology ten-year-series question is now searchable, with answers, in one place.
Take a look → - New
Send pictures to Ask CherAI
You can now paste (Ctrl+V), drop or attach a picture in Ask CherAI, on every notes page and in the P1 Drillers, and it will read it. In the drillers, tick Include the current question to ask about the question on your screen.
Take a look → - New
Ask CherAI in the P1 Driller
Stuck on a Paper 1 question? Open Ask CherAI in the Chemistry and Physics drillers. It knows the question on your screen and gives hints until you answer. Signed-in students can ask 100 questions a day until 11 Nov.
Take a look → - Improved
Question Banks, all in one place
Every question bank now sits in its own Question Banks section on the Chemistry, A-Level Chemistry and Physics pages, including the Cambridge, School and Physics banks.
Take a look → - New
New: Physics P1 Driller
Daily Paper 1 practice for Pure Physics and Science Physics, with questions from Singapore and Cambridge papers, instant marking with explanations, a question timer and timed rounds.
Take a look → - Improved
Physics question banks: new look
Both physics question banks now look like the chemistry bank: one list where each question opens in place, with the original paper, the answer right underneath, and Copy link and Save. They also appear in the Physics Content menu.
Take a look → - Improved
Biology notes: new diagrams and a better food-tests practical
The cells, enzyme and heart diagrams have been redrawn, there is a drag-and-drop food-tests activity, and every question now has a short title.
Take a look → - New
Biology notes now have diagrams and interactives
Every Biology concept now has a labelled diagram, and many have a hands-on activity to try. Phone-friendly versions load automatically, and each diagram shows only what your course needs.
Take a look → - Improved
P1 Driller: choose your question banks
Tick which banks your daily questions come from: Singapore exams, Cambridge international exams or school prelims. The driller now has over 4,000 Pure and 2,700 Science questions.
Take a look → - New
New: P1 Driller (100 MCQs a day)
Practise Paper 1 with questions from the SG, international and school banks. Aim for 100 a day; every answer is marked with an explanation, and most questions target the topics the 2026 structured paper did not test.
Take a look → - Improved
Question banks free until 11 Nov
The SG, international and school chemistry question banks are open to everyone for exam revision until 11 November, 11:59 pm.
Take a look → - New
2026 Physics Paper 2 analysis and suggested solutions
Both Physics analysis pages now have a 2026 P2 Analysis tab: suggested solutions with textbook quotes, general sentiments, the topic heat map, how it compared with our prediction, and the outcomes not tested. These are unofficial solutions written by us.
Take a look → - New
Diagram Studio: make your own maths diagrams
Pick one of 171 maths figures, change its numbers, drag its labels and corners, and shade parts with a click. Download it as a picture or print it at real size.
Take a look → - New
Cambridge Math Diagrams
Every diagram from the Cambridge IGCSE Maths (0580), Additional Maths (0606) and O Level Additional Maths (4037) past papers, 1,078 figures cut out and sorted by topic. Sign in to browse, search and download them.
Take a look → - Improved
A-Level Chemistry notes: practise MCQs with hints
Past-year multiple-choice questions in the notes now have clickable options, a Show hint button and a Show answer button. A wrong choice turns red; the right choice shows the explanation. Use the camera button to see the original paper.
Take a look → - New
Biology notes are here
The first Biology notes are open: Movement of Substances (diffusion, osmosis and, for Pure, active transport) with past-paper practice and drills, plus a syllabus comparison for Pure, Science and G2.
Take a look → - New
Hand in paper homework with photos
Did your bridging homework on paper? Open 'Did it on paper? Hand it in with photos' in that day's homework tab, add a photo of each page and press Submit photos.
Take a look → - ImprovedNew
A-Level Data booklet and syllabus pop-up
The Data booklet pop-up now scrolls through every page, and has a new Syllabus tab with the H1 (8873) and H2 (9476) syllabuses to read in the same pop-up.
Take a look → - Improved
A-Level Data Booklet opens in a pop-up
The Data booklet button in the A-Level top bar now opens the booklet in a pop-up on the page, with a page picker, zoom and a PDF link, instead of a new tab.
Take a look → - New
New video: spotting a compression and a rarefaction
Not sure how to find a compression or rarefaction on Fig. 10.12? A new animated explainer in Physics 10.4 Sound shows how to spot them in the layers of air and on the graph.
Take a look → - New
Physics practice Paper 2s with mark schemes
Ten Science Physics practice Paper 2s and one Pure Physics Paper 2, each with a full mark scheme that quotes the textbook word for word. Together the ten Science papers test every learning outcome.
Take a look → - Improved
Worked answers now to 3 significant figures
Every rounded answer in the physics worked examples is now given to 3 significant figures. Answers that come out exactly are unchanged.
Take a look → - Improved
Physics Summary now matches your level
Each Summary tab now shows only what your syllabus (G3 Pure, G3 ScPhy or G2 ScPhy) covers, and the Light notes gain ray diagrams for every object distance.
Take a look → - New
6 more Paper 1 practice sets, graded Easy, Medium and Hard
Science and Pure Chemistry each get six new multiple-choice sets covering the whole syllabus. Every question is labelled Easy, Medium or Hard, and each set is graded, so you can start gently and work up. Full mark schemes are included.
Take a look → - Content
Light: new exam question and a lens correction
Section 12.4 has a new worked question on a scale ray diagram (four rays, focal length, magnification). When the object is at F, the image is now described as virtual, upright and magnified, as in the textbook.
Take a look → - New
Physics past-paper analyses
New analyses of every past Science (Physics) and Pure Physics paper, 2010 to 2025: topic heat maps, syllabus changes and what to revise first. Find them in the Content menu of the Physics notes.
Take a look → - New
Science Physics past-paper analysis
A new analysis of every Science (Physics) Paper 1 and Paper 2 from 2010 to 2025: topic heat map, what changed in the new syllabus, and which topics to revise first.
Take a look → - Improved
MCQ answers show straight away
In the International Paper Question Bank, the mark-scheme answer for each multiple-choice question is now shown immediately — no extra click needed.
Take a look → - New
5 new Paper 1 practice sets for the 2026 syllabus gaps
Four new multiple-choice specimen Paper 1 sets for Science Chemistry and four for Pure Chemistry (plus the earlier forecast paper), built from the learning objectives the Oct/Nov 2026 papers did not test. Each comes with a mark scheme that explains every option.
Take a look → - Improved
A-Level Ten Year Series is free
The H1 and H2 Chemistry Ten Year Series (2016 to 2025 papers, with answers and worked explanations) now opens for everyone, no premium account needed.
Take a look → - NewContent
The real 2026 papers, analysed
The Oct/Nov 2026 Pure Chemistry Paper 2 and Science (Chemistry) Paper 3 are in. A new '2026 Analysis' tab on each theory-analysis page reviews the paper, maps its topics, checks it against our forecast and lists every syllabus outcome it did not examine, which is where Paper 1 will look next.
Take a look → - Improved
Question banks renamed
The O-Level bank is now the SG Question Bank, shown with its syllabus codes, and the Cambridge bank is now the 0439 Intl Question Bank. The Content menu uses the new names too.
Take a look → - Improved
New particle diagram in the Physics Summary
The Kinetic Particle Model summary now shows solid, liquid and gas side by side, so you can compare how the particles are arranged.
Take a look → - New
A-Level Chemistry: Revision Summary page
A new page after Chapter 14 puts every chapter's summary (mind map, key diagrams, tables and flowcharts) in one place, one tab per chapter.
Take a look → - New
Physics notes: summaries for every chapter
Every physics chapter now has a Summary tab with a mind map, key definitions, comparison tables, flowcharts and common exam traps. A new Summary page after Chapter 20 collects all 20 chapters in one place.
Take a look → - Improved
A-Level Chemistry: visual chapter summaries
Each chapter's Summary tab now has a mind map, key definitions, comparison tables, flowcharts and common exam traps, so it is quicker to revise from.
Take a look → - Improved
A-Level Chemistry notes: new look
Each chapter now opens with a short introduction, has a collapsible contents list and a one-page chapter summary, and the syllabus Compare tab spells out every learning outcome in full.
Take a look → - NewContent
AL Chemistry videos: 84 now
The A-Level Chemistry video collection has grown from 57 to 84 videos, with more pause-and-think questions, a practice question after every video, and links from the notes sections that had none.
Take a look → - ImprovedContent
Updated 8-bit summary videos
The Chemistry summary videos have been refreshed. In Chapter 11 all six videos now sit side by side on the Summary tab.
Take a look → - New
New: G1 Sci
A new G1 Sci tab with Lower Secondary and Upper Secondary theory resources (coming soon), and a new G1 Sci bay in the 3D library.
Take a look → - NewContent
8-bit summary videos for the Chemistry notes
Every chapter's Summary tab now opens with a short 8-bit video (six for Organic Chemistry). They are made for G3 Science (Chemistry), and you can also find them all in the new Summary tab on the Videos page.
Take a look → - Improved
Bridging homework you can print
Each day's homework on the Sec 1 G2 → G3 bridging page now has a Download blank sheets (PDF) button, so you can print it and work on paper. Every day and tab also has its own link to share.
Take a look → - Content
New triangle construction walkthrough
Sec 1 Chapter 11 now has a step-by-step walkthrough for constructing a triangle from one side and two angles. Walkthroughs in the Sec 1, Sec 2, E-Math and A-Math notes now all use the same full-width bars.
Take a look → - New
Sec 1 G2 → G3 bridging programme
Moving up from G2 to G3 Maths? Three days of lessons cover the 17 Sec 1 ideas G3 expects, each with worked examples, plus a homework you can write on and hand in online.
Take a look → - NewContent
Ten Paper 3 practice papers, with mark schemes
The Science (Chemistry) specimen page now has ten different Paper 3s (3.1 to 3.10), plus Pure Papers 1 and 2. Every paper has a free mark scheme.
Take a look → - New
Mark schemes for all specimen papers
Every specimen paper (Science Chemistry Paper 1 and 3.1-3.5, Pure Chemistry Papers 1 and 2) now has a free mark scheme next to it, so you can mark your own attempt.
Take a look → - New
More specimen papers: 5 Chemistry Paper 3s and Pure Chemistry papers
The 2026 forecast pages now have five different Science (Chemistry) Paper 3 practice papers (3.1 to 3.5) plus Paper 1, and Pure Chemistry Papers 1 and 2. Every tab now has its own link.
Take a look → - New
New game: Hog Run
A piggy arcade adventure. Pick Bacon or Maggie, drag back and let go to launch, then roll, steer and gas your way across the farm. Play it in 3D or 2D.
Take a look → - New
2026 specimen papers + free theory analysis
Try two practice papers (Paper 1 and Paper 3) built from our 2026 topic forecast for Science (Chemistry). Both analysis pages are now free.
Take a look → - Improved
Theory paper analysis is now free
The Pure and Science (Chemistry) theory paper analyses are open to everyone. See which topics each year's Paper 1 and structured paper tested, and read a 2026 forecast for each paper.
Take a look → - Improved
AL Chemistry notes: wording and answer fixes
We checked every chapter of the AL Chemistry notes and tightened definitions, worked-example wording and Check-yourself answers, with new definitions where the syllabus asks for them.
Take a look → - New
H1 / H2 syllabus view in the AL Chemistry notes
Every AL Chemistry notes chapter now has a Syllabus tab showing the official H1 and H2 learning outcomes, with links to the sections that cover them, and a Compare view for the two levels.
Take a look → - Improved
Every video now has a short description
Chemistry, physics, E-Math and A-Math videos in the notes now show a short description above the player, so you can see what you will learn before you press play.
Take a look → - New
New: fats, oils and margarine (Chemistry 11.2)
The Hydrocarbons notes now explain fats, oils and margarine step by step, with diagrams, a short animated video and 17 new questions, including past-paper ones.
Take a look → - Improved
Chemistry Practical: Tips & Tricks
The Practical notes for G3 Pure (Paper 3) and G3 ScChem (Paper 5) now give short Tips & Tricks on every question, so you can see how to earn the marks. Choose your level at the top.
Take a look → - New
Physics Practical: technique notes and Pure Paper 3
The Physics Practical page now has technique notes on precision, tables, graphs and errors for everyone, plus G3 Pure Paper 3 past papers (2018 to 2022 and 2026, with 2023 to 2025 coming). Pick your level at the top.
Take a look → - Improved
Question bank joins the Chemistry notes menu
The O-Level Chemistry question bank now has the same top bar as the notes, and you can open it from the Content menu. Its level follows the bar's All / G3 Pure / G3 ScChem / G2 ScChem buttons.
Take a look → - New
O Level Chemistry Question Bank
A premium bank of Pure, Combined and NA past-paper questions from 2016 to 2025, with topic filters and a view of each original paper. Find it under OL Chemistry > Theory Resources.
Take a look → - Improved
Notes: Content is now a dropdown
On the Chemistry, Physics, Science and Math revision notes, the Content button is one dropdown. Open it to jump to any chapter, or pick Table of contents at the top for the full list.
Take a look → - Content
2026 E-Math Paper 2: analysis and mark scheme
See which topics the real 2026 Paper 2 tested, how they compare with the predictions, the combined Paper 1 + 2 picture, and worked solutions with method, independent and accuracy marks for every question.
Take a look → - NewContent
Exam questions under the O-Level and Lower Sec videos
Chemistry, Physics and Lower Sec Science videos now end with a past-year exam question, with hints and a worked explanation that turns green when you get it right and red when you do not.
Take a look → - New
Chapter overview pages for every subject
The Content button in the notes now opens a page listing every chapter, and the small arrow beside it still jumps straight to a chapter.
Take a look → - ImprovedContent
AL Chemistry videos: exam questions
Every AL Chemistry video now ends with a past-year exam question with hints and a worked explanation. The videos also have more pause-and-think checkpoints, plainer wording and a new layout.
Take a look → - New
Updates page
You are here. Whenever something new goes live it is listed on this page, and the Updates button glows until you have seen it.
Take a look → - Improved
Math page tidied
The empty Secondary 2 Math interactives section has been removed. S2 Math Notes are unchanged.
Take a look → - New
The Shop and the Shopkeeper
A new Shop button in the menu, and an old wizard Shopkeeper at the far end of the library. Click him to visit the Shop. The shelves are still being stocked.
Take a look → - Improved
Chemistry is now OL Chemistry
The O-Level Chemistry section has a new name and a Games sub-section, and AL Chemistry and Games now have dropdown menus too.
Take a look → - New
New game: CATALYST: The Broken Formula
A chemistry role-playing game. Find it under Games > Revision Games and under the new OL Chemistry > Games section. Best on a desktop with a keyboard.
Take a look → - Fix
Jump Quest: stray icon removed
A leftover icon above the Main menu bar on the Jump Quest page is gone, so the game now sits right under the bar.
Take a look →