Answer
Please see the work below.
Work Step by Step
Metals:
Physical Properties:
• They are solid at room temperature (except Mercury and Gallium).
• They are generally hard (except sodium and potassium)
• They are highly dense.
• They have a lustrous appearance.
• They are good conductors of heat and electricity.
• They have high melting and boiling points (except Gallium and Cesium)
Nonmetals:
Physical Properties:
• They exist as solids or gases at room temperature (except Bromine).
• They are generally soft (except diamond).
• They have low density.
• They have a non-lustrous appearance (except Iodine).
• They are bad conductors of heat and electricity (except graphite).
•They have low melting and boiling points (except diamond and graphite).
Metals:
Chemical Properties:
• Active metals react with water and form metal hydroxides or metal oxides and release hydrogen gas.
• Metals reacts with oxygen to form basic oxide (except Aluminium and Zinc which form amphoteric oxide)
• Metals react with acids to form salt and hydrogen gas. While with nitric acid no hydrogen gas is formed since nitric acid is a strong oxidizing agent.
• Metals generally form ionic compounds.
Nonmetals:
Chemical Properties:
• Nonmetals do not release hydrogen gas on reaction with water.
• Nonmetals react with oxygen to form acidic oxides.
• Nonmetals do not release hydrogen gas upon reaction with acids.
• Nonmetals generally form covalent compounds.
