The periodic table
KS4 · 30 minutes · Link group number to electron structure and reactivity.
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Our learning goal
Link group number to electron structure and reactivity.
Your turn: Choose one thing you would like to understand by the end.
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My lesson notes & project
Full teaching script
- Today: The periodic table. Our goal: Link group number to electron structure and reactivity.
- Take one idea at a time. Pause after each sentence; ask for repetition whenever you need it.
- Elements are ordered by proton number. Group number tells you outer-shell electrons: group 1 has one, group 7 has seven. Group 1 metals get more reactive down the group (the outer electron is further from the nucleus and easier to lose); group 7 non-metals get less reactive down the group. Group 0 noble gases are full and inert.
- Together: choose one example from the explanation and show how it works. What do you notice?
- Your turn: Predict the reaction of potassium with water and justify it.
- Reflect: what made sense, and what would you like explained differently?
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