5 Written questions
4 Multiple choice questions
- The separation of the components in a liquid mixture into fractions which differ in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.
- The continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.
- the process in which a solid changes directly into a gas
- Separation technique used to purify particles of interest from a mixture of solids. Mixture is dissolved in saturating amounts in warm solvent. As the solution cools, the pure substance crystallizes while impurities remain in solution.
4 True/False questions
Desiccator → container that can be sealed from the atmosphere and holds a drying agent
Column Chromatography → An analytical technique which separates mixtures based on their distribution between a stationary liquid phase and a moving gas phase.
Recrystallization → a process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.
Gas Chromatography → An analytical technique which separates mixtures based on their distribution between a stationary liquid phase and a moving gas phase.