Discuss Moseley's modern Periodic Law and resulting table based on increasing atomic numbers. The properties of the elements are a periodic function of their atomic numbers. Identify groups and periods within the periodic Table. Identify the distinction between molecular and structural formulas and how molecular models are used. Structural Formulas- Formulas that identify the type of bonding between atoms as well as the shape of the molecule.
Molecular models show the spatial arrangement and the connectivity of atoms to one another.
Define and list the molecular elements. Distinguish between an atomic symbol and a formula. Symbols are the first two letters or the first and third letters of the name of the element that are used in chemical formulas and equations to identify the presence of an element. Initially the symbols of the known elements were from the Latin. Nowadays most symbols of the elements stem from the English word.