AQA GCSE Chemistry Unit 2.2

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True or false? Ionic compounds have high melting points because the forces of electrostatic attraction holding them together are strong.

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When will ionic compounds conduct electricity?

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True or false? Solid ionic compounds conduct electricity because the ions are locked tight together and can pass on charge.

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What state would you expect to find simple covalent molecules such as methane in at room temperature?

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Why do simple covalent molecules have low melting and boiling points?

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True or false? Simple covalent molecules conduct electricity when liquid.

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Which of these are allotropes of carbon?

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Which of these describe the bonding in diamond?

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Which of these describe the bonding in graphite?

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What is a fullerene?

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True or false? We create alloys to reduce the malleability of metals by breaking up the layered structure of the metal.

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True or false? The sea of delocalised electrons in metals prevents them from conducting electricity.

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What is a shape memory alloy?

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What do the properties of a polymer depend on?

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Which type of poly(ethene) is stronger?

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Which type of polymer has intermolecular forces broken down on heating?

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Which type of polymer has covalent crosslinks that are not broken down on heating?

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How big is 1 nanometre?

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Twenty questions for the second section of Unit 2 in AQA GCSE Chemistry: Structure and properties.

AQA GCSE Chemistry Unit 2.2

True or false? Ionic compounds have high melting points because the forces of electrostatic attraction holding them together are strong.

When will ionic compounds conduct electricity?

True or false? Solid ionic compounds conduct electricity because the ions are locked tight together and can pass on charge.

What state would you expect to find simple covalent molecules such as methane in at room temperature?

Why do simple covalent molecules have low melting and boiling points?

True or false? Simple covalent molecules conduct electricity when liquid.

Which of these are allotropes of carbon?

Which of these describe the bonding in diamond?

Which of these describe the bonding in graphite?

What is a fullerene?

True or false? We create alloys to reduce the malleability of metals by breaking up the layered structure of the metal.

True or false? The sea of delocalised electrons in metals prevents them from conducting electricity.

What is a shape memory alloy?

What do the properties of a polymer depend on?

Which type of poly(ethene) is stronger?

Which type of polymer has intermolecular forces broken down on heating?

Which type of polymer has covalent crosslinks that are not broken down on heating?

How big is 1 nanometre?

True or false? Modern sunscreens use titanium oxide nanoparticles because they are more effective than conventional UV ray blockers.

True or false? Nanoparticles are ineffective catalysts due to their small size.