Intermolecular Forces
What IMF is present in all molecules?
dispersion
What does polarity depend on?
electronegativity + shape
Ionic bonding involves the ______ of electrons.
transfer
Which has higher BP: CH₄ or NH₃?
NH₃
What is Mr Evans' middle name?
Matthew
What IMF occurs in polar molecules?
dipole-dipole
Is CO₂ polar or non-polar?
non-polar
What type of bonding is present in H₂O?
covalent
Which is most soluble in water: CH₄, NH₃, CO₂?
NH₃
How many Siblings does Mr Evans have
6
What IMF occurs in NH₃?
hydrogen bonding
Why is H₂O polar?
bent + dipoles don’t cancel
Why do ionic compounds have high melting points?
strong electrostatic attraction between ions
Explain why water has a high boiling point.
hydrogen bonding
What are Mr Evans' Teacher Areas?
Chemistry, Maths and Japanese
Rank IMFs from weakest to strongest.
dispersion < dipole-dipole < hydrogen bonding
Explain why CH₄ is non-polar.
symmetrical → dipoles cancel
Explain the difference between ionic and covalent bonding.
transfer vs sharing + ions vs molecules
Explain why ethanol dissolves in water
hydrogen bonding
How Tall is Mr Evans?
6'3"
Why is hydrogen bonding strong?
strong polarity + small H
Explain why a molecule can have polar bonds but be non-polar.
symmetry cancels dipoles
Why is MgO ionic while CO₂ is covalent?
Why is MgO ionic while CO₂ is covalent?
Why does CaCO₃ not dissolve in water?
strong ionic lattice
What Month is Mr Evans Born? Bonus Points if you can say the day
November