Scientific name: Mg
Magnesium is a highly reactive metal that is not found in its pure form. It is quite common, and is essential for life. The pure metal burns bright white and is an ingredient in flares.
Scientific name: Hg
Mercury, also called quicksilver, is the only metal that is liquid at room temperature. Mercury is a heavy metal and is very toxic. Mercury is used to dissolve gold in the process of gold mining, it was used in making felt, in older style thermometers, and in dental fillings.
Scientific name: Ni
Nickel is a common, reasonably corrosion-resistant metal that is widely used. It is a silver color with a slight hint of gold. Nickel is used to plate other metals, to make coins from, and as part of alloys such as stainless steel.
Pewter is a metal alloy made from around 85% tin, and the remainder being antimony, about 1% copper and 4 or more percent lead. It is commonly used for photo frames, vases and decorative mugs. Plates, bowls and cups were all made from pewter before glass and porcelain became more common. People of ancient cultures used to get lead poisoning partly from eating from pewter plates, and partly from using a lead compound to sweeten their wine.
Scientific name: Pt
Platinum is a corrosion-resistant precious metal. It is mainly used in jewellery, electronic components and laboratory equipment but it has other uses as varied as the automotive industry and dentistry.
Scientific name: Ag
Silver is a soft, shiny metal that can be polished to be highly reflective. It tarnishes easily, however. Silver is very conductive and today is used electrical components. Silver is widely used for making jewellery, and was used for making tableware like knives and fork. As pure silver is so soft, most practical items made from silver are made from an alloy of silver and another metal like copper.
Solder is an alloy of tin and lead. It has a low melting point, and is used to join small metal things together. Soldering is most often used to make circuit boards.
Steel is an alloy of iron and small amounts of carbon, chrome and other metals. Steel is much, much harder than iron and is much more useful for making things out of. Steel is used heavily in building construction, making land and sea vehicles of all kinds, and many household appliances. Some types of steel can still rust, but surgical and stainless steel are far less prone to rusting.
Something made from metal is tarnished if it has a layer of a dull, colored substance on it instead of being bright, shiny and reflective. Tarnish is a different color on different kinds of metal. silver tarnish is black and copper tarnish is green. Some metals do not tarnish, instead they rust, which can eat away all of the metal over time instead of just leaving a thin coating on the surface.