Which molecule will have the highest melting point, HCl or CH4? Your answer must discuss both compounds and address:

• the type of compound (ionic, polar covalent, or nonpolar covalent)
• the type of intermolecular attractions
• the strength differences of the attractions

Which molecule will have the lower boiling point, NaCl or MgO? Justify your answer must discuss both compounds and address:

• the type of compound (ionic, polar covalent, or nonpolar covalent)
• the type of intermolecular attractions
• the strength differences of the attractions

Which substance will require more energy to melt the substance, propanol or octane? Justify your answer must discuss both compounds and address:

• the type of compound (ionic, polar covalent, or nonpolar covalent)
• the type of intermolecular attractions
• the strength differences of the attractions

propanol

octane

Circle all the groups that can form hydrogen bonds with water.

Acetic acid, also known as vinegar, is frequently mixed with water to create an all-purpose disinfectant spray. Draw a model to show how acetic acid (CH3COOH) and water interact when mixed together. If the substance will not interact with water, explain why.

Note: Your model should include any relevant charges and all intermolecular forces should be labeled.

Hexane (C6H14) is a straight chain hydrocarbon and is a significant constituent of gasoline. Draw a model to show how hexane and water interact when mixed together. If the substance will not interact with water, explain why.

Note: Your model should include any relevant charges and all intermolecular forces should be labeled.

Rank the following substances from least soluble in water to most soluble in water. (The least soluble molecule will be ranked at the ranked at the top)

1. 

   Stearic acid

2. 

   
   

   Cyanidin

3. 

   Mineral oil

4. 

   Betanin

Justify your answer to question 7. Your justification should discuss intermolecular forces.