Separation of the Components of a Mixture

Pre$-$lab

Questions

Before beginning this experiment in the laboratory, you should be able to answer the following questions.

Classify each of the following as a pure substance or a mixture; if it is a mixture, state whether it is heterogeneous or homogeneous: $($a$)$ concrete, $($b$)$ tomato juice, $($c$)$ marble, $($d$)$ seawater, and $($e$)$ iron.

Suggest a way to determine whether a colorless liquid is pure water or a salt solution without tasting it$.$

What distinguishes a mixture from an impure substance?

Define the process of sublimation.

How do decantation and filtration differ? Which should be faster?

Why should you never place a hot object on the pan of a balance?