Chemical Bonding (HSC SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which type of solid is held together by delocalised electrons?
Which type of solid is held together by delocalised electrons?
Metallic solids
What key feature distinguishes covalent network solids from molecular compounds?
What key feature distinguishes covalent network solids from molecular compounds?
They contain no individual molecules
In diamond, how many other carbon atoms does each carbon atom bond to?
In diamond, how many other carbon atoms does each carbon atom bond to?
Four
In silica (), how many oxygen atoms does each silicon atom bond to?
In silica (), how many oxygen atoms does each silicon atom bond to?
Four
Why do covalent network solids have extremely high melting points?
Why do covalent network solids have extremely high melting points?
Breaking many strong covalent bonds needed
Why do covalent network solids not conduct electricity?
Why do covalent network solids not conduct electricity?
No electrons are free to move
What happens to valence electrons in metallic bonding?
What happens to valence electrons in metallic bonding?
They become delocalised and mobile
Why are metals excellent conductors of electricity?
Why are metals excellent conductors of electricity?
Delocalised electrons can move freely
What is malleability?
What is malleability?
Ability to be hammered into sheets
When do ionic lattice solids conduct electricity?
When do ionic lattice solids conduct electricity?
When molten only