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Elements, Compounds and Mixtures — Syllabus

ICSE · Class 7 · Chemistry

What Elements, Compounds and Mixtures covers in ICSE Class 7 Chemistry: 4 topics, for the 2026-27 session. Topics include Elements, Compounds and Mixtures.

43 questions35 flashcards5 formulas & key relations5 concepts

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4 Topics · ICSE Class 7 Chemistry · 2026-27

Topics in Elements, Compounds and Mixtures

1

1. Elements

  • An element is a pure substance that cannot be converted further into anything simpler than itself by any physical or chemical process.
  • An element is made up of identical atoms.
  • At present 118 elements are known.
2

2. Compounds

  • A compound is a pure substance formed by the chemical combination of two or more elements in a fixed ratio by mass.
  • The smallest unit of a compound is a molecule.
  • Compounds can be broken down into constituent elements only by chemical means, not by physical means.
3

3. Mixtures

  • A mixture is an impure substance formed by mixing two or more pure substances in any proportion without chemical change.
  • The components of a mixture are called constituents or components.
  • Components retain their individual properties in a mixture.
4

4. Differences between compounds and mixtures

  • A compound is a pure substance, but a mixture is an impure substance.
  • A compound has a fixed composition, while a mixture has no fixed composition.
  • A compound forms by chemical combination, while a mixture forms by simple mixing.

Key Concepts

Central concept: Classification of substances into elements, compounds, and mixtures, and the methods used to separate mixtures

ElementsCompoundsMixturesClassification of elementsSeparation of mixturesSpecial mixtures and examplesFormulas and symbols

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Frequently Asked Questions

What are the important topics in Elements, Compounds and Mixtures for ICSE Class 7 Chemistry?
Key topics in Elements, Compounds and Mixtures include Elements, Compounds, Mixtures, Differences between compounds and mixtures. Study these first, then practise questions on each for Class 7 exams.
How should I revise Elements, Compounds and Mixtures for Class 7 exams?
Learn the core ideas first, then work through the 43 practice questions on Elements, Compounds and Mixtures. 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 7 Chemistry Syllabus

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