Separation Techniques: Electrophoresis vs Chromatography

What are the two main separation techniques discussed in the video?

• Evaporation and Crystallization

• Centrifugation and Decantation

• Electrophoresis and Chromatography

• Distillation and Filtration

In chromatography, what is the role of the stationary phase?

• To attract and slow down particles

• To provide an electric field

• To heat the sample

• To dissolve the sample

How does electrophoresis separate charged particles?

• By using an electric field

• By filtering them through a membrane

• By dissolving them in a solvent

• By heating them

What type of medium is used in electrophoresis?

• A solid metal plate

• A liquid solvent

• An absorbent medium like gel

• A heated column

Which of the following is a mobile phase in gas-liquid chromatography?

• Agarose

• Helium

• Water

• Silica gel

What type of substances are typically separated using chromatography?

• Radioactive isotopes

• Charged particles

• Uncharged molecules

• Metal ions

In forensic science, what is a common use of electrophoresis?

• Detecting metal ions

• Separating volatile gases

• Identifying DNA fragments

• Measuring pH levels

What is the main focus of ion chromatography?

• Separating volatile substances

• Separating ions

• Separating large molecules

• Separating gases

How can uncharged molecules be prepared for separation in electrophoresis?

• By heating them

• By dissolving them in water

• By giving them a charge through chemical reactions

• By filtering them

What is the main takeaway about the relationship between electrophoresis and chromatography?

• They are identical techniques

• They are outdated methods

• They are used for the same substances

• They are complementary techniques