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.
- 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.
- condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry
- A technique that uses a solid stationary phase and a moving liquid phase to separate the components of a mixture.
4 True/False questions
Gravity filtration → a process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.
Reflux → container that can be sealed from the atmosphere and holds a drying agent
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.