Non-metals

Things to remember

• Metals, when struck with a hammer emit a peculiar sound called metallic clink.
• They can be beaten into thin plate except antimony, arsenic and bismuth. Such property is known as malleability.
• Wire can be made from metals. Such property is known as ductility.
• The elements that show the properties of both metals and non-metals are called metalloids.
• An alloy is defined as a homogenous mixture of two or more metals and non-metals.
• Non- metals are bad conductor of heat and electricity. 
•  The hardest and most precious non- metal is diamond.