Classes of Elements
The periodic table includes elements such as non-metals, properties help you identify them. Most metals have few electrons on the outermost shell. Metals have many properties; an example is that they are shiny and malleable. Most non-metals are right of the zigzag line on the periodic table. Metalloids are known as semi-conductors and have properties of metals and non-metals. Each element has a chemical symbol. Conductivity and reactivity change from left to right in each period. On the periodic table, the same group elements have the same physical and chemical properties.
