Metals and Metallurgy

Study Notes

Metals play a significant role in modern chemistry due to their unique properties, which have led to numerous industrial applications. They are typically defined by their ability to form cations when oxidized, have relatively high densities, low reactivity with other non-metal elements, good thermal conductors, strong electrical conductors, and malleable behavior. There are several broad categories of metals: alkali metals, alkaline earth metals, rare earth elements, transition metals, post-transition metals, and structural metal compounds.

Metallurgy, the science of working with metals, is based on understanding these properties and how they can be used and combined to create useful materials. For example, alloys are mixtures of two or more metals, often allowing one metal's property to enhance another's—for instance, combining copper and zinc produces brass, known for its corrosion resistance and hardness. Many common household items consist of alloys, like solder (a combination of lead and tin) or silverware made from sterling silver (an alloy of gold, silver, and copper).

The vast majority of metals available today were discovered through electrolysis, a process where electric current is passed through water containing dissolved salts to separate out the metal. Each has specific physical characteristics, such as melting points and boiling points, reflecting their chemical stability and reactive nature. Some examples include iron, aluminum, magnesium, tungsten, titanium, chromium, nickel, copper, zinc, lead, mercury, cadmium, radium, beryllium, vanadium, niobium, molybdenum, rhenium, tantalum, thorium, uranium, actinium, radon, francium, neodymium, protactinium, polonium, americium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, hafnium, zirconium, scandium, gallium, indium, silicon, sulfur, arsenic, antimony, bismuth, tellurium, selenium, and helium.

In summary, metals serve as building blocks for many products and applications thanks to their chemical and physical attributes. Their easy manipulation allows for diverse uses, from everyday objects like jewelry to complex technology found in electronics and vehicles.

Description

Explore the unique properties of metals and their industrial applications, as well as the science of working with metals known as metallurgy. Learn about different categories of metals, such as transition metals, alkali metals, and alloys, and how they are used to create useful materials.