Metals and non-metals
Properties of metals
Physical properties of metals
States of matter at room temperature
Density
Lustre
Hardness
Malleability
Ductility
Sonorous
Good conductor
Magnetic property
Chemical properties of metals
Reaction with water
Reaction with acid
Reaction with oxygen
Reaction with bases
Very reactive
Produce hydrogen gas
Formed metal oxide
Formed salts and hydrogen gas
Drawn into wires
Made into thin sheet
Produce ringing sound
Heat and electricity
Shine
Solids
Properties of non metals
Physical properties
Soft and dull
Not Sonorous
Obtained in different colour
Brittle
Not ductile
Poor conductor of heat and electricity expect graphite
Chemical properties
Reaction with water
No reaction
Reaction with acid
No reaction
Reaction with Base
Reaction with oxygen
Complex reaction
Formed metallic oxide
Advantages and disadvantages of using aluminium for cooking utensils
Advantages of aluminium
Expensive
Good conductor of heat
Light weight
Disadvantages of aluminium
Can be corroded by acid
Don't cook acidic food in aluminium Cookwares
Aluminium anodizing to prevent corrosion
Uses of metals and non-metals
Uses of metals
Utensils
Machine components
Jewellery (use of noble metal
Table
Uses of non-metals
Plastic
Fertilizer
Rocket fuel
Common uses of non-metals (elements wises)
Chlorine
Disinfectant
Phosphorus
Fertilizer
Matchboxes
Nitrogen
Fertilizer
Refridgarant