Giant Covalent Structures (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
10 questions from this quiz
What are giant covalent structures?
What are giant covalent structures?
Huge networks of atoms with covalent bonds
Which of these is an example of a giant covalent structure?
Which of these is an example of a giant covalent structure?
Diamond
Why do giant covalent structures have very high melting points?
Why do giant covalent structures have very high melting points?
Strong covalent bonds need much energy
Why do most giant covalent structures not conduct electricity?
Why do most giant covalent structures not conduct electricity?
No free-moving charged particles
Which giant covalent structure can conduct electricity?
Which giant covalent structure can conduct electricity?
Graphite
How are carbon atoms arranged in graphite?
How are carbon atoms arranged in graphite?
Layers of carbon atoms in hexagons
Why is graphite soft and slippery?
Why is graphite soft and slippery?
Layers slide over each other easily
How many bonds does each carbon atom form in graphite?
How many bonds does each carbon atom form in graphite?
Three bonds
What happens to the unbonded electrons in graphite?
What happens to the unbonded electrons in graphite?
They become free electrons
Why can graphite conduct electricity?
Why can graphite conduct electricity?
Free electrons can move through layers