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Difficulty: EasySublimation, Magnetization, and Centrifugation

Match each mixture or suspension with the most appropriate physical separation technique used to separate its components.

  • A dry solid mixture of ammonium chloride and sodium chlorideSublimation
  • A mixture of magnetic iron filings and non-magnetic sulfur powderMagnetization
  • A suspension of red blood cells in liquid blood plasmaCentrifugation

Answer

Ammonium chloride and sodium chloride mixture matches Sublimation; Iron filings and sulfur powder mixture matches Magnetization; Blood cell suspension in plasma matches Centrifugation.
Each physical mixture is matched to its correct separation technique based on specific properties: Sublimation separates ammonium chloride because it vaporizes directly from solid state; Magnetization extracts iron filings due to magnetic attraction; Centrifugation separates blood cells from plasma by density differences under centrifugal force.

Step-by-Step Solution

1
Analyze the solid mixture of ammonium chloride and sodium chloride.
Ammonium chloride is a sublimating salt while sodium chloride is not.
Sublimation is used to separate a mixture containing a component that changes directly from solid to gas on heating.
2
Analyze the mixture of iron filings and sulfur powder.
Iron is attracted to a magnet while sulfur is non-magnetic.
Magnetization relies on differences in magnetic properties to separate magnetic substances from non-magnetic ones.
3
Analyze the blood cell suspension in plasma.
Cells and liquid plasma have different densities.
Centrifugation accelerates the sedimentation of suspended particles in liquids using rapid rotation based on density differences.

Key Concept

Selection of physical separation methods based on sublimation, magnetic property, and density differences
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Topics

Sublimation, Magnetization, and Centrifugation