19) Look at this molecules in the figure. Does it have hydrogen bonding in the pure liquid state? OYes O No Yes N 20) Look at this molecules in the figure. Does it have hydrogen bonding in the pure liquid state? No H S H

Name four type of intermolecular forces which stabilize 2° and 3° structure of proteins.

The structural formula of glucose is given. Identify the strongest intermolecular force present in glucose.

Which statement accurately depicts what happens to water on the molecular level in a tea pot when it begins to boil? The molecules begin to move farther apart increasing their intramolecular forces and they escape the liquid state to enter the solid state The molecules begin to move farther apart decreasing their intermolecular forces and they escape the liquid state to enter the gas state The molecules begin to move closer together overcoming their intermolecular forces which holds them together and they escape the liquid state to enter the gas state

Based from the given critical temperature values in the table, rank the following compounds according to the strength of intermolecular attractive forces. 1- STRONGEST 2 3 4 5- WEAKEST   Hydrogen Methane Nitrogen Oxygen Carbon monoxide

rank the following based on strength of intermolecular force (strongest to weakest) Ar, He, Kr, Ne

Directions: Below are five chemical compounds. In the first column, determine the type of intramolecular force for each compound while on the second column, determine the strongest type of intermolecular force that each compound have. Justify your reason in identifying their intermolecular force in the third column. An example is provided below. Compound Reason for classifying Туре of Intramolecular force/ chemical bond Strongest type of intermolecular force present The compound exhibits London dispersion force because it is a nonpolar covalent сompound. Example: Covalent bond London Methane dispersion CH4 1. Hydrogen fluoride HF 2. Magnesium chloride (MgCl2) in Water 3. Hydrogen bromide HBr 4. Silicon dioxide SiO2 5. Fluorine molecule F2