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Symbols, Valency, Radicals and Formulae
Chemistry (Science Paper 2) · Chapter 1 · 1. The Language of Chemistry
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Your path through this chapter
Visual lesson Beta
- Part 1: Symbols, valency and radicals18 slides
- Part 2: Formulae, names and radicals in the atmosphere15 slides
Flashcards Beta
30 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
69 board-style questions with instant checks: Multiple choice 28, Short answer 24, Long answer 6, Assertion and reason 4.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
Step 5: Not started- Chapter test (long) — Symbols, Valency, Radicals and Formulae · 40 marks · 60 min
- Chapter test (short) — Symbols, Valency, Radicals and Formulae · 20 marks · 30 min
Topics 5
- Symbols of elements: definition and the symbols of commonly used elements
- Valency: definition; combining with hydrogen; valence electrons of metals and non-metals; mono-, di-, tri- and tetravalent elements
- Radicals: definition, valencies of common acidic and basic radicals
- Radicals in the atmosphere: their effects on living organisms and ways of reducing them
- Writing names and formulae of compounds using valencies