G11 SUPER GIO
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PRACTICE MISSIONbonding, polarity, geometry, and properties

bonding, polarity, geometry, and properties

NEW CASENEW EVIDENCE

Boiling-point comparison

CH4 and NH3 have similar molar masses, but boiling points are -162 C and -33 C. NH3 molecules form hydrogen bonds; CH4 is nonpolar.

  1. Control for approximate size.
  2. Identify intermolecular forces.
  3. Stronger attractions require more energy to separate.

What best explains the difference?

MODELMolecular Geometry Rig
PHYS
PROVEChoose with evidence
CLUE

Pause. Find what matters. Then make your move.