when a more reactive element displaces, a less reactive element from a compound that contains the less reactive element.is called a displacement reaction. Copper Sulphate (CuSO4 ) + Zinc (Zn)→ Zinc Sulphate (ZnSO4) + Copper (Cu) ( Blue ) (Colourless) (Red)
Sodium metal is very reactive. It reacts vigorously with oxygen and water. A lot of heat is generated in the reaction. It is, therefore, stored in kerosene.
When sulphur dioxide is dissolved in water sulphurous acid is formed. The reaction can be givenas follows:Sulphur dioxide (SO2 ) + Water (H2O) → Sulphurous acid (H2SO3 )
CORROSION IN COPPER :- When a copper vessel is exposed to moist air for long, it acquires a dull green coating. The green material is a mixture of copper hydroxide (Cu(OH)2) and copper carbonate (CuCO3 ). The following is the reaction 2Cu + H2O + CO2 + O2→Cu (OH)2 + CuCO3
Iron (Fe) + Oxygen (O2 ) + Water (H2O) → ?Magnesium (Mg) + Oxygen (O2 ) → ? Iron (Fe) + Oxygen (O2 ) + Water (H2O) → Fe2O3. xH2O( Rust)Magnesium (Mg) + Oxygen (O2 ) →Magnesium oxide ( MgO) + Hydrogen gas (H2)
Mercury (Hg ) is the only metal which is found in liquid state at room temperature.
Metals like sodium and potassium are soft and can be cut with a knife.
Those materials are soft, non – lustrous, non malleable, non ductile, non sonorous and bad conductors of heat and electricity. The materials which generally possess these properties are called non metals. The examples of metals are oxygen, nitrogen, carbon etc.
Those materials are hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity. The materials which generally possess these properties are called metals. The examples of metals are iron, copper, aluminium , calcium, magnesium, etc.
Metals produce ringing sounds, they are said to be sonorous.
