Sections of this unit
- 1.1 Modelling matter & classifying substances Not started
- 1.2 Symbols, formulae & representing substances Not started
- 1.3 Inside the atom — the Bohr model Not started
- 1.4 Atomic notation & electron arrangements Not started
- 1.5 The Periodic Table — groups & periods We are here
- 1.5b Lewis diagrams — valence electrons & bonding We are here
- 1.6 Reactivity trends — groups 1, 2 & 17 Not started
- 1.7 Physical & chemical change Not started
- 1.8 Rates of reaction Not started
The whole unit
Unit booklet
Our booklet for the unit: eight sections, each with key words, notes and practice. Section links open it at the right page.
Class workbook
The printed workbook you write in during lessons, by Emma Burnett. Each section above names the chapter it matches.
Homework & worksheet
8 weeks of homework (one per page) + an atoms worksheet.
Knowledge Book
The reference — the “why” behind the workbook, to understand & revise.
Reading a periodic-table tile
A large labelled tile (mass · symbol · proton number) + a blank to annotate live.
What this page stores about you
The notes, quizzes and simulations on this page work without an account. Two things need one: the class workbook (it belongs to the school, so you sign in to open it) and quiz scores (a quiz only counts for your class if you are signed in when you take it — as a guest, nothing is recorded).
If you are signed in and tick “I understand this” on a section, press “Mark as read”, or tick “I've watched this” on a video, we store three things each time: your account, which section or video it was, and the date. Nothing else — not how long you looked, not where you were.
Your teacher can see which sections you have ticked or marked as read, and which videos you have ticked as watched, so they know who to check in with. No other teacher and no other student can see it. It is deleted after 180 days. The exception is “Mark as read” and “I've watched this”: those are kept, so a section you opened stays open, and you can erase them yourself at any time. If you are not signed in, your ticks are kept only in this browser and nothing is sent to us.
You never have to tick anything, and nothing else on this page changes if you don't.
What you write in ‘Explain it’ stays in this browser; it is not sent to us or to your teacher.
Playing a video loads it from YouTube, and opening a simulation loads it from PhET (University of Colorado); neither is loaded until you click. Two kinds of picture are fetched when the page opens, or when you scroll down to them: the small preview picture on each video comes from YouTube's image server, and the picture of each simulation comes from PhET's.