Question

Why mixtures do not have fixed melting or fixed boliling poitns?

Answer 1

Answer:

Explanation:

Mixture contain different types of substances in different compositions. these substance may have different melting and boiling point hence the melting and boiling point of a mixture cannot be fixed. ... However there are also impurities can lowers the melting and boiling point during heating.

Mixtures contain different types of substances and that too in unknown concentration.

These substances have different boiling points and hence the boiling point of the mixture can never be fixed..

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Answer 2

Answer:

Elements, Compounds and Mixtures – Elements are the basic ‘building blocks” of all matter, which cannot be broken down into simpler substances by any physical and chemical methods. – Atoms are the smallest possible unit of an element.

Explanation: