Another physical property that varies across a period is the melting point of the corresponding halide.Modern quantum mechanics explains these periodic trends in properties in terms of electron shells.The physical properties of elements vary across a period, mostly as a function of bonding.Variation of Physical Properties Across a Period.The following table lists a few examples of these properties for some similar sized polar compounds (the non-polar hydrocarbon hexane is provided for comparison).Physical Properties of Carboxylic Acids.Describe the general trends of physical properties within a group on the periodic table.Physical properties include such things as:.A physical property of a pure substance can be defined as anything that can be observed without the identity of the substance changing.Each element within a group has similar physical or chemical properties because of its atom's outermost electron shell (most chemical properties are dominated by the orbital location of the outermost electron).The physical properties (notably, melting and boiling points) of the elements in a given group vary as you move down the table.Variation of Physical Properties Within a Group.Therefore, while the covalent bonding model accounts for many physical observations, it does have its limitations.Covalent compounds generally have low boiling and melting points, and are found in all three physical states at room temperature.Several physical properties of molecules/compounds are related to the presence of covalent bonds:.The Lewis bonding theory can explain many properties of compounds.The covalent bonding model helps predict many of the physical properties of compounds.Physical Properties of Covalent Molecules.Mass and volume are both examples of extensive physical properties.Some examples of physical properties are:.Physical properties are properties that can be measured or observed without changing the chemical nature of the substance.For example, the freezing point of a substance is a physical property: when water freezes, it's still water (H2O)-it's just in a different physical state.All properties of matter are either extensive or intensive and either physical or chemical.

Physical and Chemical Properties of Matter.

Examples of physical property in the following topics:

What is a physical property of matter