Question

1.A

When a heating curve for a material going through phase change is graphed with temperature on the x-axis, and heat added to the system on the y-axis, the phase change is clear because it has _______________

A) a horizontal slope

B) a vertical slope

C) an angled slope

1.B

The strongest intermolecular forces in a sample of pure propane (CH₃CH₂CH₃) are:

A) Ion-Dipole Forces

B) London Dispersion Forces

C) Dipole-Dipole Forces

D) Hydrogen Bonding

1.C

Which chemical is expected to have the highest boiling point?

A) H₂O

B) CH₃CH₂CH₃

C) Cu

D) HF

1.D

Which material is expected to have the highest surface tension?

A) CH₃CH₂OH

B) H₂O

C) CH₃CH₂CH₂CH₃

D) CH₃OCH₃

1.E

In a phase diagram, the phase most likely to be at low temperature and high pressure is the ____________ phase.

A) gas

B) plasma

C) liquid

D) solid