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Across southern Africa, in general, they're made of tin or tin-plated steel.

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8y ago

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Why is the frame on a bike made out of alloy and not pure aluminium?

Aluminium alloys are stronger than pure aluminium, which is comparatively soft. Pure aluminium is also considered chemically reactive (thus the layer of aluminium oxide which coats the metal due to oxidation). Pure aluminium hardly exists due to its strong affinity with oxygen in air. In fact, aluminium foils and beverage cans are also alloys of aluminium, with about 92 to 99% of aluminium. So likewise, bike frames are also made of alhminium alloys because of its characteristics of being strong and lightweight.


What element in the periodic table is used to make cans?

Aluminium


Is aluminum in everyday objects?

Aluminium is a very common metal: aluminium foils, aluminium cans, kitchen items, cables, boxes for instruments etc.


Why aluminium is suitable for use of making soft drink cans?

Aluminium is suitable for making soft drink cans because it is lightweight, malleable, and has good corrosion resistance. Its ability to be easily shaped into thin sheets allows for efficient manufacturing of cans while providing a barrier against light, oxygen, and moisture to maintain the quality of the beverage. Additionally, aluminium is infinitely recyclable, making it an environmentally friendly choice for packaging.


Why the same magnets are not used for separating both aluminium and steel cans?

Aluminium and steel have different magnetic properties. Steel is ferromagnetic, meaning it is attracted to magnets, while aluminium is non-magnetic and does not respond to magnetic fields. Therefore, magnets can effectively separate steel cans from other materials, but they cannot be used to separate aluminium cans, which require different methods, such as air classifiers or eddy current separators.