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Formula Sheet

Practical Work — Formula Sheet

ICSE · Class 9 · Chemistry

12 formulas from Practical Work (ICSE Class 9 Chemistry) on one page, grouped by topic. Covers Recognition and Identification of Gases.

43 questions36 flashcards12 formulas & key relations5 concepts

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A diagram illustrating the laboratory test for hydrogen gas, showing a burning splint producing a 'pop' sound when brought near the gas.
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12 Entries · 3 Sections

Formulas and Key Relations

Recognition and Identification of Gases

Zn + 2HCl → ZnCl2 + H2

2H2 + O2 → 2H2O

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Ca(OH)2 + CO2 → CaCO3 ppt + H2O

CaCO3 + CO2 + H2O → Ca(HCO3)2

Action of Heat on Substances

CuCO3 → CuO + CO2

ZnCO3 → ZnO + CO2

Na2CO3·10H2O → Na2CO3 + 10H2O

CuSO4·5H2O → CuSO4 + 5H2O

2CuSO4 → 2CuO + 2SO2 + O2

Hard Water, Soft Water, Soap and Detergents

Ca(HCO3)2 + Na2CO3 → CaCO3 + 2NaHCO3

CaSO4 + 2NaSt → CaSt2 + Na2SO4

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Frequently Asked Questions

What are the important topics in Practical Work for ICSE Class 9 Chemistry?
Key topics in Practical Work include Hydrogen is colourless, Heating causes different substances to change, Reactive metals give hydrogen gas, Sodium salts give a golden yellow. Study these first, then practise questions on each for Class 9 exams.
How many formulas are in Practical Work?
This sheet lists 12 formulas from Practical Work, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Practical Work for Class 9 exams?
Learn the core ideas first, then work through the 43 practice questions on Practical Work. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 9 Chemistry Formula Sheet

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