The Periodic Table

Almost 80% of elements are these, and they are found to the left of the heavy stair step line on the PT

The First Early Elements were Air, Earth, Fire, Water, and Aether

Found in Group 13-16, contains metals, nonmetals, and Metalloids

Valence Electrons take part in chemical bonding and range in number from 1-8

Found in the main body of the PT, get their name from their proper placement

Who developed the scientific method, and supported the fact that matter is made of individual elements

Found in Groups 3-12, often used in alloys(such as sterling silver)

Found in Group 17, tendency to gain electrons makes them highly reactive

A table of the chemical elements arranged that displays their periodic properties/ atomic numbers

A row in the table

Periodic=a pattern

Do not exhibit the general properties of metals, to the right of the PT

Have characteristics between metals/nonmetals, located along the stair step line

Who came up with a system that became the accepted standard for the symbols of the elements

The discipline of turning substances to gold (gave rise to Modern Day Chemistry)

Elements of Group 1, reactive, found as parts of compounds

States the properties of elements vary in a periodic way with their atomic numbers

Who made the one of the first lists of natural elements and discovered that fire couldn’t be an element

Found in Group 2, slightly less reactive, often added to alloys

A set of elements in the same column on the table

Found in group 18, chemically unreactive(inert), used for lighting, optics, and medicine

Valence Electrons are found in the innermost energy level in a neutral atom

Metalloids are also known as semiconductors