Important Facts about Some Metals

Important Facts about Some Metals

• Zinc phosphide is used for killing rats.
• Wood furnitures are coated with zinc chloride to prevent termites.
• Excess of copper in human beings causes disease called Wilson.
• Galvanised iron is coated with zinc.
• Rusting of iron is a chemical change which increases the weight of iron.
• Calcium hydride is called hydrolith.
• Calcium hydride is used to prepare fire proof and waterproof clothes.
• In flash-blub, magnesium wire is kept in atmosphere of nitrogen gas.
• Titanium is called strategic metal because it is lighter than iron.
• Group 1st element are called alkali metals because its hydroxides are alkaline whereas group 2nd elements are called alkaline earth metals.
• Babbitt metal contain 89% Sn (Tin), 9% Sb (Antimony) and 2% Cu (Copper).
• Gun powder contains 75% Potassium nitrate, 10% sulphur and 15% charcoal.
• Chromium trioxide is known as chromic acid.
• Nichrome wire is used in electrical heater [(Ni, Cr, Fe)]
• Potassium carbonate (K₂CO₃) is known as pearl ash.
• Generally transition metals and their compounds are coloured.
• Zeolite is used to remove hardness of water.
• In cytochrome iron (Fe) is present.
• Selenium metal is used in photo electric cell.
• Galium metal is liquid at room temperature.
• Palladium metal is used in aero plane.
• Radium is extracted from pitchblende.
• World famous Eiffel Tower has steel and cement base.
• Actinides are radio-active elements.
• Cadmium rod is used in nuclear reactor to slow down the speed of neutron.
• Sodium peroxide is used in submarine and also to purify closed air in hospital.
• Co (60) is used in cancer treatment.
• Onion and garlic odour due to potassium.
• Oxides of metals are alkaline.
• Silver and copper are the best conductor of electricity.
• Gold and Silver are the most malleable metal.
• Mercury and iron produces more resistance in comparison to the other during the flow of electricity.
• Silver and copper are the best conductor of electricity.
• Gold and Silver are the most malleable metal.
• Mercury and iron produces more resistance in comparison to the other during the flow of electricity.
• Lithium is the lightest and the most reductant element.
• In fireworks, crimson red colour is due to presence of strontium (Sr).
• Green colour is due to the presence of Barium in fireworks.
• Barium sulphate is used in X-ray of abdomen as barium meal.
• Barium hydroxide is known as Baryta water.
• Osmium is the heaviest metal and the Platinum is the hardest.
• Zinc chloride is known as flower of zinc. It is also known as Chinese white and used as white paint.
• Silver chloride is used in photo chromatic glass.
• Silver iodide is used in artificial rain.
• Silver nitrate is used as marked during election. It is kept in coloured bottle to avoid decomposition.
• Silver spoon is not used in egg food because it forms black silver sulphide.
• To harden the gold, copper is mixed. Pure gold is 24 carrat.
• Iron Pyrites (FeS₂) is known as fool's gold.
•  Mercury is kept in iron pot because it doesn't form amalgam with iron.
• In tubelight  there is the vapour of mercury and argon.
• Tetra-Ethyl lead is used aa anti knocking compound.
• Lead-pipe is not used for drinking water because it forms poisonous lead hydroxide.
• Fuse wire si made up of lead and tin.