Atomic StructureTopic Summary
Topic Summary: The Periodic Table
Part of The Periodic Table — GCSE Chemistry
This topic summary covers Topic Summary: The Periodic Table within The Periodic Table for GCSE Chemistry. Revise The Periodic Table in Atomic Structure for GCSE Chemistry with 20 exam-style questions and 24 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 12 of 12 in this topic. Use this topic summary to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 12 of 12
Practice
20 questions
Recall
24 flashcards
Topic Summary: The Periodic Table
Key Terms
- Group: Vertical column, same outer electrons
- Period: Horizontal row, same number of shells
- Metal: Left/centre, conducts, forms + ions
- Non-metal: Right, poor conductor
- Atomic number: Basis for ordering
Must-Know Facts
- Group = number of outer shell electrons
- Period = number of occupied shells
- Same group = same outer electrons = similar properties
- Group 1: reactivity increases down
- Group 7: reactivity decreases down
- Group 0: full outer shell, unreactive
- Ordered by atomic number, NOT atomic mass