Carbon and its Compound — Chapter Summary
ICSE · Class 8 · Chemistry
Summary of Carbon and its Compound for ICSE Class 8 Chemistry. Key concepts: Carbon is the third most, Allotropy is the property by and Graphite.
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Overview
Carbon is the basis of life and appears in many useful substances around daily life. It exists in free forms such as diamond and graphite, and also in combined forms such as carbon dioxide, carbon monoxide, coal, coke, charcoal, and many organic compounds. Carbon is special because it can form long
Key Concepts
Carbon is the third most important
Carbon is the third most important element for life after oxygen and hydrogen. Its symbol is C, atomic number is 6, mass number is 12, and valency is
Allotropy is the property by
Allotropy is the property by which an element exists in two or more forms in the same physical state with identical chemical properties but different
Graphite
Graphite, diamond, and fullerene are crystalline allotropes of carbon. Graphite has layers of carbon atoms in hexagonal sheets, diamond has a rigid te
Graphite is a natural crystalline form
Graphite is a natural crystalline form of carbon. Each carbon atom is linked to three neighbours in layers. Weak forces between layers make it soft an
Diamond is the purest form
Diamond is the purest form of naturally occurring carbon. It is a giant molecule in which each carbon atom is linked to four neighbours in a rigid tet
Learning Objectives
- Define allotropy and identify the allotropes of carbon.
- Distinguish between crystalline and amorphous forms of carbon.
- Describe the properties and uses of graphite, diamond, and fullerene.
- Explain the preparation, properties, and uses of carbon dioxide.
- Understand carbon monoxide as a poisonous and reducing gas.
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