Question

Explain why boiling point and melting point can be used as a way to check purity.

Answer 1

because an element who has high melting point is stable.and pur metal melts at constant temp but impure not.

Answer 2

Hey dear,
The question should be *How* instead of *Why*.

● Checking purity of compounds -
- Various compounds have different melting/boiling points and this property can be used to distinguish them.
- Fractional distillation is a technique used to separate impurities.
- Usually impurities have lower melting/boiling point, thus evaporates earlier can be removed.
- However, pure compounds have high melting/boiling points and evaporates very slowly.
- This is how we can check purity of compounds (usually fuels).


Thanks for asking..