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Carbon and its Compound — Revision Notes

ICSE · Class 8 · Chemistry

Carbon and its Compound revision notes for ICSE Class 8 Chemistry: 4 topics in quick points. Part of the ICSE Class 8 Chemistry syllabus.

50 questions40 flashcards5 concepts

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Key Topics to Revise

1

1. Carbon: Basic Facts and Occurrence

  • Carbon has symbol C, atomic number 6, mass number 12, and valency 4.
  • Carbon is the basis of life and is the third most important element for life on earth after oxygen and hydrogen.
  • Carbon occurs in free state as coal, diamond, and graphite.
2

2. Crystalline Allotropes of Carbon

  • The crystalline allotropes of carbon are graphite, diamond, and fullerene.
  • Graphite is a natural crystalline form of carbon.
  • Diamond is the purest form of naturally occurring carbon.
3

3. Graphite

  • Graphite is greyish black, opaque, shiny, soft, and greasy to touch.
  • Graphite has layers of hexagonal carbon atoms.
  • The layers are held by weak forces, so they slide over one another.
4

4. Diamond

  • Diamond is the purest form of naturally occurring carbon.
  • A diamond is a giant molecule.
  • Each carbon atom in diamond is bonded to four other carbon atoms in a rigid tetrahedral structure.

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Full Notes

Key Concepts

Carbon is the third most importantAllotropy is the property byGraphiteGraphite is a natural crystalline formDiamond is the purest form

Frequently Asked Questions

What are the important topics in Carbon and its Compound for ICSE Class 8 Chemistry?
Key topics in Carbon and its Compound include Carbon: Basic Facts and Occurrence, Crystalline Allotropes of Carbon, Graphite, Diamond. Study these first, then practise questions on each for Class 8 exams.
How should I revise Carbon and its Compound for Class 8 exams?
Learn the core ideas first, then work through the 50 practice questions on Carbon and its Compound. 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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