Elastic collisions i.e., they take place within a negligible span of time and does not lose kinetic energy. Molecules do not attract or repel each other (no intermolecular forces). (The volume they occupy is small compared to the total V.) 3. Any gas is composed of a very large number of molecules move in straight lines their direction is random.
Thus, a gas will easily spread to space given to it and not stay in an open container and described by following characteristics: 1. However, the greater large kinetic energy present in a gas is much more than the Intermolecular attractive force between them.
Intermolecular attractions or forces are always present between molecules. They only stop moving only when temperature reaches Absolute Zero, 0 K. intermolecular forces: The forces that are other than chemical bonds that tend to attract two molecules to each other discussed in more detail later in section 7.13 (Three types: 1) hydrogen bonding, 2) dipole-dipole attraction, 3) Londodn dispersion forces).ħ.2 Kinetic Molecular Theory and Physical States Gaseous State: Gas has high speed molecules From the Kinetics Molecular Theory of Matter and the Theory of Heat, it follows that molecules are in constant motion. The physical state of a compound is determined by the temperature and the kinetic energy as well as the intermolecular forces in the substance. Ionic compounds never exist as gases since very high temperature is required in overcoming strong electrostatic attraction between the ions. Slowly moving molecules are attracted to each other easily and results in condensed phases: liquid and solids.
As the temperature decreased, the molecules of a gas can be condensed to liquids and then to solids. These particles are constantly in motion and possess energy of motion (kinetic energy) that we perceive as temperature. Gases, Liquids, and Solids 7.1 Kinetic Molecular Theory of Matter Kinetic Molecular Theory of Matter The Kinetic Molecular Theory of Matter is a concept that basically states that matter is composed of a very large number of very tiny particles molecules or ions.
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