Hello and welcome to Teach Kids Chemistry! Today, we will be exploring the fascinating element known as iridium. Iridium is a rare and precious metal that has many unique properties and uses. From its discovery in 1803 to its role in modern technology, iridium has played an important role in the world of chemistry. Join us as we dive into the world of iridium and discover what makes this element so special.
The Periodic Element Iridium Overview
Iridium is a chemical element with the symbol Ir and atomic number 77. It is a dense, silvery-white metal that belongs to the platinum group of elements. Its atomic mass is 192.217 u, and it has 77 protons, 115 neutrons, and 77 electrons. Iridium is located in period 6 and group 9 of the periodic table. It is a transition metal and is classified as a metal. Its electronegativity is 2.20, and its specific heat capacity is 25.10 J/(mol·K). Iridium has a high melting point of 2,466 °C and a boiling point of 4,428 °C. Its density is 22.56 g/cm³.Iridium is a rare and expensive metal that is used in a variety of applications. It is often used as a hardening agent for platinum alloys, and it is also used in spark plugs, electrical contacts, and crucibles for high-temperature applications. Iridium is also used in the production of LCD screens, as well as in the aerospace industry for rocket engine parts and other high-stress components. Due to its high melting point and density, iridium is also used in the production of high-temperature thermocouples and other high-temperature measurement devices. Despite its many uses, iridium is not considered to be an essential element for human health, and there are no known biological functions for it.
Everyday objects that contain the periodic element iridium?
There are many everyday objects that contain chemicals or compounds that can be used to teach chemistry concepts. For example, water is a compound made up of two hydrogen atoms and one oxygen atom, and can be used to teach about chemical formulas and the properties of different elements. Salt, which is made up of sodium and chlorine, can be used to teach about ionic bonding and the properties of salts. Baking soda, which is sodium bicarbonate, can be used to teach about chemical reactions and the properties of acids and bases. Other examples include vinegar, which is acetic acid, and sugar, which is a carbohydrate. By using these everyday objects, students can learn about chemistry concepts in a simple and relatable way.
Differences in the periodic element iridium across states of matter
The state of an element can vary greatly depending on its temperature and pressure. At standard temperature and pressure (STP), most elements are either solids or gases. Solids have a fixed shape and volume, while gases have neither. As temperature and pressure increase, some solids can become liquids, which have a fixed volume but take the shape of their container. As temperature and pressure continue to increase, some liquids can become gases, which have neither a fixed shape nor volume. At extremely high temperatures and pressures, some gases can become plasmas, which are highly ionized and conductive. Plasmas are often found in stars and lightning bolts, and have unique properties such as the ability to emit light.
Is the periodic element iridium dangerous or radioactive?
Iridium is a chemical element with the symbol Ir and atomic number 77. It is a dense, silvery-white metal that is not considered dangerous or radioactive. In fact, iridium is used in a variety of applications, including electronics, spark plugs, and jewelry. While some iridium compounds can be toxic, the metal itself is not considered a significant health hazard. Overall, iridium is a relatively stable and safe element that can be used in a variety of ways.
Is the periodic element iridium rare and expensive?
Yes, iridium is a rare and expensive element. It is one of the least abundant elements in the Earth’s crust and is found in very small quantities. It is also difficult to extract and refine, which adds to its cost. Iridium is used in a variety of applications, including electronics, medicine, and the production of high-performance alloys. Its rarity and unique properties make it a valuable and sought-after element in many industries.
Learn about all the elements with a periodic table!