5 Written questions
4 Multiple choice questions
- condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry
- container that can be sealed from the atmosphere and holds a drying agent
- a process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.
- the process in which a solid changes directly into a gas
4 True/False questions
Recrystallization → 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.
recrystallization → a process in which an applied vacuum draws a solution through filter paper held in a Buchner funnel.
Reflux → The continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry.
Thin layer Chromatography → mixture of compounds to be separated is introduced onto the column that is packed with a stationary solid. The solid is continuously washed by a flow of solvent (mobile) passing through the column. The continuous flow of solvent throught the column and the interaction b/w the solid compounds in the mixture, separates the mixture as it passes down the colum.