Question

6 Give reasons for the following
a) Alluminium foils are used to wrap food items .
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Answer 1

Answer:

Aluminium foils are used to wrap food items because aluminum metal is malleable. Therefore, it can be beaten into thin foils.

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Answer 2

$\large\underline{\underline\mathbb\orange{QUESTION}}$

Give reasons :-

a) Alluminium foils are used to wrap food items .

$\large\underline{\underline\mathbb\blue{REASON}}$

Aluminium is one of the less reactive metals, so it does not react with food items and does not alter the taste. Moreover, being a metal; aluminium is highly malleable and can be made into very thin foils which are perfect for wrapping food.

Aluminium is malleable, soft and does not react with food items, so it is used to wrap food items.

$\large\underline{\underline\mathbb\red{ADDITIONAL\:INFORMATION}}$

Why food remains warm?

It is a good conductor but a very poor radiator and absorber (the two go together) - because it is shiny. The inner surface, where not actually in contact, will not absorb radiated heat well and the outer surface will not radiate heat well. Hence the food will not lose much heat. It is also cheap to produce in suitable sheet form.

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