Alloys are prepared by mixing a metal with other metals or nonmetals in certain proportion. The properties of the main metal change when the metal is alloyed.
i. How do the properties of iron change when carbon and chromium are mixed with it?
ii. How do the properties of copper change when tin is mixed with it?

Explanation

i.Pure iron undergoes rusting easily, but when it is mixed with 18% chromium and 8% carbon, it fonns an alloy called stainless steel which does not get stains with air or moisture and also does not rust
ii. When copper is mixed with 10% tin, it forms an alloy called bronze which is not affected by sun or rain.