Metals,Nonmetals, &Metalloids
Non-Metals
Brittle (breaks easily) Not ductile
Metals
Ductile (most metals can be drawn out into thin wires) Malleable (most metals can be hammered into thin sheets)
Metal Chemical Properties
Easily lose electrons Corrode easily. Corrosion is a gradual wearing away. (Example: silver tarnishing and iron rusting)
Metalloids
Elements on both sides of the zigzag line have properties of both metals and nonmetals. These elements are called metalloids.
Metals
High density (heavy for their size) High melting point
Metals
Luster (shininess) Good conductors of heat and electricity
Metalloids
Malleable Conduct heat and electricity better than nonmetals but not as well as metals
Metals
Most elements are metals. 88 elements to the left of the stairstep line are metals or metal like elements
Non-Metals
No luster (dull appearance) Poor conductor of heat and electricity
Non-Metals
Nonmetals are found to the right of the stairstep line. Their characteristics are opposite those of metals.
Non-Metals
Not malleable Low density Low melting point
Metalloids
Solids Can be shiny or dull Ductile
Non-Metal Chemical Properties
Tend to gain electrons