Revise later
SpaceTo flip
If confident
All Flashcards
What is the effect of a lower boiling point in distillation?
The substance evaporates first and is separated from the mixture.
What is the effect of a substance being insoluble in a solvent during filtration?
The substance is trapped by the filter paper.
What is the effect of high polarity on a compound in TLC with a nonpolar solvent?
The compound moves a shorter distance on the TLC plate.
Compare homogeneous and heterogeneous mixtures.
Homogeneous: uniform composition, components not visible. Heterogeneous: non-uniform composition, components visible.
Differentiate between separation by distillation and filtration.
Distillation: separates liquids based on boiling points. Filtration: separates solids from liquids.
Compare polar and nonpolar substances in TLC.
Polar: Attracted to the polar stationary phase, moves less. Nonpolar: Attracted to the nonpolar mobile phase, moves more.
What are the general steps of distillation?
1. Heat the liquid mixture. 2. The substance with the lowest boiling point evaporates. 3. Vapor is cooled and condenses. 4. Collect the separated liquid.
What are the steps of filtration?
1. Prepare the filter. 2. Pour the mixture through the filter. 3. Liquid passes through. 4. Solid remains on the filter.
Outline the general steps of Thin-Layer Chromatography (TLC).
1. Spot the sample on the TLC plate. 2. Place the plate in a solvent. 3. Solvent moves up the plate by capillary action. 4. Components separate based on polarity. 5. Visualize the separated components.