The Periodic Table

Organizing the Elements In 1869, Dmitri Mendeleev organized the known elements into a table based on their properties and atomic masses.

The Modern Periodic Table Arranged in order of increasing atomic number. Properties of elements change in a periodic fashion from left to right across a period.

Use the LARGE blank periodic table for the following Use the LARGE blank periodic table for the following. You may color or outline the groups or simply label them with their names.

The Periodic Table Elements in each group have similar properties. The columns are called groups. Group numbers 1 18 1 2 3 4 5 6 7 2 13 14 15 16 17 The rows are called periods. 3 4 5 6 7 8 9 10 11 12 Period numbers Elements in each group have similar properties.

Group 1 elements are called the alkali metals.

Group 2 elements are called the alkaline earth metals.

Elements in Groups 3 – 12 are called the transition metals.

Group 13 elements are called the boron group.

Group 14 elements are called the carbon group.

Group 15 elements are called the nitrogen group.

Group 16 elements are called the oxygen group.

Group 17 elements are called the halogens.

Group 18 elements are called the noble gases.

Elements below the periodic table are called inner transition metals..

Use the first small periodic table, for the following two slides.

Groups 1,2, and 13-18 are called the representative elements.

Lanthanide series is the top row. Actinide series is the bottom row.

Use the second small periodic table for the following.

Classification of the Elements Blue – Metal Green – Metalloid Yellow – Nonmetal Pink – Noble gas Grey - Synthetic

Properties of Elements Metals: Solids at room temperature Shiny Can be drawn into wires (ductile) Can be pounded into thin sheets (malleable) Conduct heat and electricity

Properties of Elements Nonmetals: Gases or brittle solids at room temperature Do not conduct heat or electricity Not malleable or ductile Metalloids Physical & chemical properties of both metals & nonmetals Noble gases Low reactivity. Contains full shell of outer electrons