Graphite is one of the crystalline forms of carbon. Two of the distinctive properties of graphite are: It conducts electricity even though it is a non-metal, and It can act as a lubricant even though it has a giant covalent structure. Give a brief explanation of these properties in light of the structure of graphite. Graphite as an electrical conductor.

Graphite is a good conductor of electricity because a carbon atom has four Valence Electrons and each carbon atom is joined to any three other carbon atoms by covalent bonds. Thus, only the three valence electrons of each carbon atom in graphite are used in the bond formation. The fourth valence electron of the carbon atom is free to move. Due to the presence of free electrons in a graphite crystal, it conducts electricity.

Graphite is one of the crystalline forms of carbon. Two of the distinctive properties of graphite are: It conducts electricity even though it is a non-metal, and It can act as a lubricant even though it has a giant covalent structure. Give a brief explanation of these properties in light of the structure of graphite. Graphite are as lubricant.

Each carbon atom in a graphite layer is joined to three other carbon atoms by strong covalent bonds to form flat hexagonal rings. The various layers of carbon atoms in graphite are quite far apart so that no covalent bonds can exist between them. The various layers of carbon atoms in graphite are held together by weak van der Waals forces. Since the various layer of carbon atoms in graphite are joined by weak forces, they can slide over one another it is the softness of the graphite which make it useful as a lubricant.

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Cambridge IGCSE Chemistry Workbook 4th Edition>Chapter 3 - Elements and Compounds>Exercise 3.4

Richard Harwood and Ian Lodge Solutions for Chapter: Elements and Compounds, Exercise 4: Exercise 3.4

Author:Richard Harwood & Ian Lodge

Richard Harwood Chemistry Solutions for Exercise - Richard Harwood and Ian Lodge Solutions for Chapter: Elements and Compounds, Exercise 4: Exercise 3.4

Attempt the free practice questions on Chapter 3: Elements and Compounds, Exercise 4: Exercise 3.4 with hints and solutions to strengthen your understanding. Cambridge IGCSE Chemistry Workbook 4th Edition solutions are prepared by Experienced Embibe Experts.

Questions from Richard Harwood and Ian Lodge Solutions for Chapter: Elements and Compounds, Exercise 4: Exercise 3.4 with Hints & Solutions

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Upper Secondary-IGCSE

IMPORTANT

Cambridge IGCSE Chemistry Workbook 4th Edition>Chapter 3 - Elements and Compounds>Exercise 3.4>Q a

Many covalent compounds exist as simple molecules where the atoms are joined together with single or double bonds. A covalent bond, make up of a shared pair of electrons, is often represented by a short straight line.
Complete the table by filling in the spaces.
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HARD

Upper Secondary-IGCSE

IMPORTANT

Cambridge IGCSE Chemistry Workbook 4th Edition>Chapter 3 - Elements and Compounds>Exercise 3.4>Q c

Graphite is one of the crystalline forms of carbon. Two of the distinctive properties of graphite are:

It conducts electricity even though it is a non-metal, and
It can act as a lubricant even though it has a giant covalent structure.
Give a brief explanation of these properties in light of the structure of graphite.

Graphite as an electrical conductor.

HARD

Upper Secondary-IGCSE

IMPORTANT

Cambridge IGCSE Chemistry Workbook 4th Edition>Chapter 3 - Elements and Compounds>Exercise 3.4>Q c

Graphite is one of the crystalline forms of carbon. Two of the distinctive properties of graphite are:

It conducts electricity even though it is a non-metal, and
It can act as a lubricant even though it has a giant covalent structure.
Give a brief explanation of these properties in light of the structure of graphite.

Graphite are as lubricant.

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