Which type of atoms form covalent bonds between them? 

billions of atoms bonded together by strong covalent bonds 

Describe the structure and bonding if a giant covalent substance. 

small number of atoms group together into molecules with strong covalent bonds between the atoms and weak intermolecular forces between the molecules 

Describe the structure and bonding of small molecules. 

many identical molecules joined together by strong covalent bonds in a long chain, with weak intermolecular forces between the chains 

Describe the structure and bonding of polymers. 

it takes a lot of energy to break the strong covalent bonds between the atoms 

Why do giant covalent substances have high melting points? 

only a small amount of energy is needed to break the weak intermolecular forces 

Why do small molecules have low melting points? 

the intermolecular forces are stronger in large molecules 

Why do large molecules have higher melting and boiling points than small molecules? 

do not have delocalised electrons or ions 

Why do most covalent substances not conduct electricity? 

each carbon atom is bonded to three others in hexagonal rings arranged in layers - it has delocalised electrons and weak forces between the layers 

Describe the structure and bonding in graphite. 

the delocalised electrons can move through the graphite 

layers are not bonded so can slide over each other 

hollow cage of carbon atoms arranged as a sphere or tube 

high tensile strength, conduct electricity 

lubricants, drug delivery (spheres), high-tech electronics 

English (UK)

Questions and answers taken from my AQA GCSE 9-1 CHEMISTRY HIGHER OXFORD Revise textbook. 

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Libby

United Kingdom

DEFAULT (England)

Chemistry

Science

C2 Covalent bonding flashcards

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GCSE Covalent Bonding, Ionic & Metallic Bonds Flashcards PDF - Free & Printable

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GCSE Covalent Bonding, Ionic & Metallic Bonds Flashcards PDF - Free & Printable

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