Define alloys. Li
An alloy is defined as a homogeneous mixture of different metals or a mixture of a metal and non-metal. Properties of alloys that make them useful over pure metals are as follows:
i. Alloys are resistant towards corrosion.
ii. Alloys are hard and strong.
iii. For example Iron is the most widely used metal and can not be used in the pure state. In the pure state, it is very soft and stretchable. If it is mixed with a small amount of carbon, it becomes hard and strong.
iv. Another example is that stainless steel, an alloy of iron, nickel and chromium is resistant towards corrosion.
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