Atoms and Elements
Review the essentials and check your understanding after your teacher’s explanation.
Meet the atom原子结构与原子中的数字
Meet the atom, read its numbers, and bring one thought to class.
Complete this core task when your teacher assigns the topic. Use the short recall cards before class.按老师指定的知识点完成网页预习，周内用提示卡回忆；不是整章预习。
Open Isotopes and Atomic Mass simulation ↗
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Atoms and elements
Distinguish an element from a compound and describe the structure of an atom.
Proton number and isotopes
Use atomic symbols to count particles and recognise isotopes.
Isotopes and relative atomic mass
Explain isotope chemistry and calculate a weighted relative atomic mass.
Electron shells and ions
Write electronic configurations for atoms and ions of the first 20 elements.
Patterns in the Periodic Table
Connect electronic configuration with group, period and general properties.
Printable worksheets
Guided worksheet
3 lessons with teacher modelling, partner checks and hint-card references.
Download DOCX ↓Printable hint cards
Use a card when you need a starting step, then return to the question. Chapter 3 cards are on pages 4 of the collection. Print the relevant pages and cut out the cards you need.
Download hint cards DOCX ↓