Which type of mixture can be separated by methods like filtration,crystallization,and distillation? Explain.

Which of the following substances sublimes upon heating?

You have a mixture of three liquids $A$,$B$,and $C$. There is a large difference in the boiling points of $A$ and the rest of the two liquids,i.e.,$B$ and $C$. The boiling points of liquids $B$ and $C$ are quite close. Liquid $A$ boils at a higher temperature than $B$ and $C$,and the boiling point of $B$ is lower than that of $C$. How will you separate the components of the mixture?

Who first proposed the atomic theory of matter? What does it suggest?

What is sublimation? Give its uses and examples.

Which of the following pairs of elements might form an alloy?