science
The periodic table is composed of elements
arranged in order of increasing
Atomic Number
characteristics of metals
hard, shiny elements that are good
conductors of heat and electricity.
The horizontal rows on the periodic table
are called
periods
Characteristics of non metals
soft, brittle elements that are
poor conductors of heat and electricity.
Columns on the periodic table are called
groups
characteristics of Metalloids
share some properties of metals
and some properties of nonmetals.
Elements in the same group have the same number
of?
valence electrons
Elements in the same group have similar
properties
The periodic table contains three types of elements:
metals, nonmetals, and metalloids.