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science

Grade-5

Easy

Question

Why are alloys hard and strong?

Due to a strong metallic bond between the elements
Atoms are regularly arranged and can act as a lubricant
It is made up of a mixture of metals
Due to mismatched size of atoms and these atoms cant slide past each other

hint Hint:

Alloys are stronger than their parent metals.

The correct answer is: Due to mismatched size of atoms and these atoms cant slide past each other

In contrast to pure metal, where all of the atoms are the same, metal alloys have a variety of atoms.

As a result, the atoms in metal alloys have a harder time moving around, making them typically much stronger and harder than pure metals.

Stainless steel is one example of an alloy that has high strength

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