4 The zigzag line on the periodic table can help you recognize which elements belong in which category.
5 Metals Metals are found to the left of the zigzag line. Most elements are metals.Most metals are solid at room temperature and are good conductors of electric current.
6 Nonmetals Nonmetals are found to the right of the zigzag line. More than half of the nonmetals are gases at room temperature.Nonmetals are NOT shiny, and are poor conductors of electric current and thermal energy.
7 Metalloids Metalloids are 8 elements that border the zigzag line. Metalloids have some properties of metals and some properties of nonmetals.Metalloids are also called semiconductors.
14 Each vertical column of elements is called a group.
15 Elements in the same group often have similar chemical and physical properties. For this reason, a group is also called a family.The chemical and physical properties of elements in a row follow a repeating pattern as you move across the period.