Page 20 - ACE YR IGCSE A TOP APPROACH TO CHEM
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(e) Diamond and graphite are useful in our daily life. State one of the uses for each.
diamond :
[1]
graphite :
[1]
(f) Silicon dioxide is another macromolecule.
Describe the structure of silicon dioxide.
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[3]
[Total: 11]
5 Copper is a transition metal. Copper atoms are bonded by metallic bonds.
(a) Describe the lattice structure of copper metal. You may draw a diagram.
[3]
(b) Copper is a good conductor of electricity. Explain why.
[1]
(c) Name another two properties to show it is a typical metal.
[2]
(d) Copper can be shaped. Explain why.
[2]
Chapter 2 Atoms, Elements and Compounds 17
Chapter 2.indd 17 3/4/22 11:59 AM
