1. Arrange the following crystalline solids in order ofdecreasing melting point.

Rank the solids from highest to lowest melting point. To rankitems as equivalent, overlap them.

KCl(s), Xe(s), H2O(S)

Arrange from the lowest to the highestpoint

2. Which of the following physical changes are exothermic(release energy)?

melting

evaporation

freezing

sublimation

3. Ion-dipole interactions can occur between any ion and anymolecule with a dipole. Identify all of the following pairs ofspecies that can interact via ion-dipole forces.

Check all that apply.

Cs+ and Br-

CH3CH2CH2OH and NO3-,

ClO2- and CH4

H2O and CH3CH2CH2OH

Cs+ and CH3Cl

Li+ and H2O

Please identify if either ION DIPOLE NTERACTIONS OROTHER TYPES OF REACTIONS

4. Of each pair of solids, which one has the higher meltingpoint?

Part C

Kr(s) and Xe(s)

and

Kr(s)

Xe(s)

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Part D

NaCl(s) and CH4(s)

and

NaCl(s)

CH4(s)

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