This document provides information about the periodic table of elements. It discusses the key properties of metals, nonmetals, and metalloids based on their location on the periodic table. Metals are located on the left side and have properties like luster, malleability, conductivity, and corrosion. Nonmetals are on the right side and have properties such as being dull, brittle, low density, and poor conductivity. Metalloids are in between and share some properties of both metals and nonmetals.
2. Elements
Science has come
along way since
Aristotle’s theory of Air,
Water, Fire, and Earth.
Scientists have
identified 92 Natural
elements, and
created about 28
others.
4. Periodic Table
A great deal of information about an element can be
gathered from its position on the period table.
Understanding the organization and plan of the periodic
table will help you obtain basic information about each of
the 118 known elements.
15. Properties of Nonmetals
Nonmetals occur to the right of the dark zig-zag on
the periodic table. Although Hydro gen is in family 1, it
is also a nonmetal. Many nonmetals are gases at
room temperature.
28. Families
Families in the periodic table share
chemical properties because all
elements in a family have the same
number of valence electrons
This means that all elements in a
family bond with other atoms in a
similar way.
29. Properties of Metals
Most metals
have 3 or less
valence
electrons
and
therefore are
likely to lose
these
electrons in
chemical
bonds.