A chemical element is a species of atoms having the same number of protons in their atomic nuclei. 118 elements are identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements. There are three types of elements metals, non-metals, metalloid. The first kind which are metals, are solid type of element when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile. A metal may be a chemical element such as iron, most metals are solid in a specific temperatures for example Mercury is a metal but it is a liquid this is because it has all the Conditions of a metal which makes it a metal. A nonmetal is a chemical element that mostly lacks metallic attributes. Physically, nonmetals tend to have relatively low melting and boiling points. Nonmetals can come in two cases liquid or gas or liquid. Metalloid, a chemical element with properties intermediate between those of typical metals and nonmetals. Usually considered under this classification are the chemical elements boron, silicon, germanium, arsenic, antimony, and tellurium. The rare elements polonium and astatine are also sometimes included. Metalloids unlike metals or nonmetals it comes with different Characteristics which are what makes the metalloids special for example Germanium which is solid in room temperature and if held by hand will become a liquid.There are a few differences between metals and nonmetals for example metals have a shiny surface, they also conduct electricity and heat very well and they are also bendable; And nonmetal's surface isn't very shiny nor is it good for conducting heat or electricity and break rather than bend. Metalloids unlike the both some have Characteristics from metals and from nonmetals for example Silicon it is normally used as glue in it's normal case it will come as a solid material, which will turn to liquid glue if exposed to high temperature; And what makes it a glue is that after heating up it will not become a full liquid but it has very high Viscosity and after leaving it for a few seconds it will become solid again. And another example such as selenium, it is basically used in solar panels this is because it's properties let store the sun's ray and turn it to electricity, another element such as Tellurium which improves the machinability of copper and stainless steel, and its addition to lead decreases the corrosive action of sulfuric acid on lead and improves its strength and hardness. Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control and is used as a coloring agent in ceramics.
