IB Chemistry 3.1 Periodic Table

________ are good conductors of heat and electricity, malleable, ductile, and lustre.

________ formed The Periodic Law: When elements were arranged in order of atomic mass, repeated properties were found.

________ formed the Law of Triads: A link between the atomic weight and distinct elements in groups of threes.

________ formed the Modern Periodic Law: When elements were placed in atomic number, there were patterns of properties.

________ are poor conductors.

________: Start at a theory and test the theory.

________: Definite measurements and observations lead to the acknowledgement of patterns, which can lead to a hypothesis and later a theory.

A link between the atomic weight and distinct elements in groups of threes

The properties in every 8th element were similar; E.g

When elements were arranged in order of atomic mass, repeated properties were found

When elements were placed in atomic number, there were patterns of properties

Definite measurements and observations lead to the acknowledgement of patterns, which can lead to a hypothesis and later a theory

Start at a theory and test the theory

Alkali Metals

Alkaline Earth Metals

Pnictogens

Chalcogens

Halogens

Noble Gases

Ba, Si, Ge, As, Sb, Te, At

______Formed the Law of Octaves: The properties of every 8th element were similar; e.g. F, Cl