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Aluminium is a shiny grey/orange metal. It is heavy/light and a bad/good electrical conductor. Therefore it is used for underground/overhead electrical cables. Othe metals can be added to aluminum to make aluminum ores/alloys. Even though aluminum is quite reactive/unreactive. it does not corrode and this decreases/increases its usefulness.

Aluminium should be recycled because it needs lots of electrical/kinetic energy to extract it. Also. aluminum ore or bauxite/ haematite is running out.

Titanium is a useful metal because it has a high conductivity/strength to weight/volume ratio. This means it is very strong and light/heavy and therefore, like aluminum, it can be used in the fishing/aerospace industry. It also does not corrode and is used medically to make replacement hips/eyes for people.

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โˆ™ 2011-09-13 13:29:12
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