Ponaganset High School

SCIENCE 258

Analyze the following data and passage regarding the different intermolecular forces and answer the
questions.
Substance Melting
Point (C)
Boiling
Point (C)
Vapor Pressure
25 C (mm Hg)
Surface Tension
20 C (mN/m) Volatility Type of Force
Hexane -79 -2 2300 0.019 High
Acetone -50 32 1500 0.022 Moderate
Butanone -41 73 1200 0.02 Moderate
Carbon Dioxide -85 -21 4001 0.012 High
Chloride Ion 63 120 19 172 Negligible
Diethyl Ether -63 56 2300 0.018 Moderate
Ethane -100 -48 6700 0.009 High
Ethyl Alcohol 34 82 823 0.08 Low
Isopropyl Alcohol 28 83 999 0.11 Low
Methane -160 -54 3504 0.005 High
Methanol 41 145 78 0.5 Low
Methyl Acetate -12 80 1001 0.05 Moderate
Potassium Ion 59 180 11 96 Negligible
Sodium Chloride
(Salt) 55 162 30 90 Negligible
Sodium Ion 80 220 23 190 Negligible
Water 0 100 65 0.9 Low
Group 1 Group 2 Group 3 Group 4
1.
2.
3.
4.
1.
2.
3.
4.
1.
2.
3.
4.
1.
2.
3.
4.
Claim:
There are 4 different types of intermolecular forces: ionic, hydrogen, dipole-dipole, and London dispersion. Look at
the data table above and sort the substances into the 4 groups according to the commonalities in properties with 4
substances in each group. List the names of each substance that belong together below.