This question is about the properties and uses of materials - AQA - GCSE Chemistry - Question 6 - 2016 - Paper 2
Question 6
This question is about the properties and uses of materials.
Use your knowledge of structure and bonding to answer the questions.
6 (a) Explain how copper conducts... show full transcript
Worked Solution & Example Answer:This question is about the properties and uses of materials - AQA - GCSE Chemistry - Question 6 - 2016 - Paper 2
Step 1
Explain how copper conducts electricity.
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Answer
Copper conducts electricity due to the presence of delocalized electrons within its metallic structure. These free (or moving) electrons can move throughout the copper lattice, allowing them to carry charge when an electric potential is applied.
Step 2
Explain why diamond is hard.
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Answer
Diamond possesses a giant covalent structure where each carbon atom forms four strong covalent bonds with other carbon atoms. This extensive bonding creates a rigid lattice that contributes to its exceptional hardness.
Step 3
Explain why thermosetting polymers are better than thermosoftening polymers for saucepan handles.
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Answer
Thermosetting polymers are preferable for saucepan handles because they do not melt when heated. They maintain their shape and structural integrity at high temperatures, unlike thermosoftening polymers which can soften and change shape when exposed to heat.