AQA · Chemistry · 8462
GCSE Chemistry: Giant covalent structures
Bonding, structure, and the properties of matter · AQA GCSE Chemistry (8462), specification point 4.2.2.6. Cards are generated from the exam board's own specification for "Giant covalent structures", and every card links back to the page it came from. Specification © AQA — used with attribution.
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What state are giant covalent substances in at room temperature?
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Solids.
Why do giant covalent structures have very high melting points?
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Every atom is linked to other atoms by strong covalent bonds, and many of these bonds must be overcome to melt the substance.
In a giant covalent structure, all the atoms are linked to other atoms by strong ? bonds.
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covalent
Name two giant covalent forms of carbon.
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Diamond and graphite.
What is the chemical name for silica?
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Silicon dioxide.
What type of structure does silicon dioxide (silica) have?
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A giant covalent structure.
What type of structure does diamond have?
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A giant covalent structure — carbon atoms joined by strong covalent bonds throughout the lattice.
What must be overcome to boil a giant covalent substance?
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The strong covalent bonds between the atoms.
Diamond, graphite and silicon dioxide are examples of ? structures.
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giant covalent
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