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Practical Work — Chapter Summary

ICSE · Class 9 · Chemistry

Summary of Practical Work for ICSE Class 9 Chemistry. Key concepts: Hydrogen is colourless, Heating causes different and Reactive metals give hydrogen.

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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Overview

Practical work in chemistry focuses on observing changes in substances, identifying gases, studying the effect of heat, using flame tests, comparing hard water and soft water, and understanding the causes and control of water pollution. Careful observation of colour, smell, flame, residue, fumes, an

Key Concepts

Hydrogen is colourless

Hydrogen is colourless, odourless, neutral, burns with a pale blue flame, and gives a pop sound with a burning taper. Oxygen is colourless, odourless,

Heating causes different substances to change

Heating causes different substances to change in characteristic ways. Copper carbonate gives black copper oxide and carbon dioxide. Zinc carbonate giv

Reactive metals give hydrogen gas

Reactive metals give hydrogen gas with dilute acid. Carbonates and hydrogen carbonates give carbon dioxide. Sulphides give hydrogen sulphide. Sulphite

Sodium salts give a golden yellow

Sodium salts give a golden yellow persistent flame. Potassium salts give a violet or lilac flame. Calcium compounds give a brick red fugitive flame. C

Hard water contains dissolved bicarbonates

Hard water contains dissolved bicarbonates, sulphates, and chlorides of calcium and magnesium, and does not lather easily with soap. Soft water forms

Learning Objectives

  • Recognise common gases by their colour, smell, and chemical tests
  • Identify substances by the action of heat
  • Use dilute sulphuric acid to test metals, carbonates, sulphides, and sulphites
  • Perform flame tests to identify sodium, potassium, calcium, and copper compounds
  • Distinguish hard water from soft water and temporary hardness from permanent hardness

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 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.

More resources for Practical Work

All ICSE Class 9 Chemistry Chapter Summary

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