Describe the three types of intermolecular forces. Intermolecular forces are responsible for the condensed states of matter. But much more weakly than a bond. Water vapor, liquid water and ice all have the same chemical properties, but their physical properties are considerably different. Intermolecular Forces Intermolecular forces are the forces of attraction between molecules which cause liquids and solids to form. London Dispersion: Attraction between molecules that form due to a temporary The physical properties of a substance depends upon its physical state. Intermolecular forces are attractive forces between molecules. Water is a good example of a solvent. • The attractive forces are stronger for ionic substances than for molecular ones • The intermolecular forces of the remaining substances depend on … Include in your explanation how they work on the submicroscopic level. Types of Intermolecular Forces (All intermolecular forces are electrostatic in nature!) Intermolecular Forces • List the substances BaCl 2, H 2, CO, HF, and Ne in order of increasing boiling points. The properties of liquids are intermediate between those of gases and solids, but are more similar to solids. Intermolecular Forces Molecules/atoms can stick to each other. Students should complete a variety of practice problems from the textbook to ensure they understand the types and relative strengths for any given selection of molecules. Covalent bond strength: 50-200 kJ/mole Intermolecular force: 1-12 kJ/mole They are considerably weaker than a covalent or ionic bond. In contrast to intramolecular forces, such as the covalent bonds that hold atoms together in molecules and polyatomic ions, intermolecular forces hold molecules together in a liquid or solid.Intermolecular forces are generally much weaker than covalent bonds. The solvent then is a liquid phase molecular material that makes up most of the solution. Types of Intermolecular Forces. Solutions consist of a solvent and solute. Types of Intermolecular Forces •van der Waals forces –between atoms and molecules of pure substances –Dipole-dipole interactions –attractive forces between polar molecules –Hydrogen bonding –attractive force in polar molecules containing a H atom bonded to a small, highly electronegative element (N, O and F) What is the strongest intermolecular force present for each of the following molecules? They are largely responsible for the observed boiling points and solubility properties of molecules. Intermolecular forces are mainly responsible for the physical characteristics of the substance. To describe the six types of intermolecular forces In contrast to intra molecular forces, such as the covalent bonds that hold atoms together within molecules and polyatomic ions, inter molecular forces exist bewteen separate particles holding them next to each other, leading to the existence of the liquid and solid phases. 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