Metals And Their Uses Homework

Metalloids: Are the least common type of elements, their properties are a mix of nonmetal and metal properties. The metalloids are hybrid elements. Perhaps the most important characteristic of metalloids is that they partially conduct electricity for semi-conductors.

Nonmetals: Are opposites of metals, that’s why they are called nonmetals (not metals). They are not malleable or ductile, they are brittle. Metals normally lose electrons to become cations, but nonmetals do the opposite and gain electrons to become anions.

Halogens: Are located in the second column from the right side of the periodic table (group 17). They all have seven valence electrons, which make them highly reactive for covalentbonds. The halogen family consists of fluorine, chlorine, bromine, iodine, and astatine. Halogens form ionic bonds with all kinds of elements. One common substance you see every day is sodium chloride (NaCl) which is better known as salt.

Noble Gases: Are located on the far right column of the periodic table. These elements are very un reactive because they have their outer shells fully filled with eight electrons (except helium which has two). The noble gas family consists of helium (which is used in balloons), neon (neon lights), krypton, xenon (which is used in headlights), argon (which is used in light bulbs), and radon (whose isotopes can be used to cure cancer).

Alkali Metals: Are located to the far left side of the periodic table (Group 1) excluding hydrogen. They are in the first group because they each only have one valence electron. Alkali metals are very reactive because they only need to lose one electron to have a full shell. This family consist of lithium (used in batteries), sodium (combines with chlorine to make salt), potassium (found in bananas), rubidium cesium and francium.

Alkaline Earth Metals: Are located one column to the right of the alkali metals (Group 2). They are also highly reactive, but not as reactive as the alkali metals, because they have two valence electrons. They are called alkaline metals because when they are mixed in solutions they form basic (alkaline) solutions. The alkaline earth metals family consists of beryllium, magnesium, calcium (what makes strong bones), strontium, barium, and radium.

Transition Metals: Make up, by far, the largest family in the periodic table. They are located between and including the following elements horizontally: scandium through copper, yttrium through silver, lanthanum through gold, actinium through all higher atomic numbers in that period. They have a lot of electrons (normally) and distribute them in many advanced/ complicated ways.

Lanthanides: Are a group of metals located on the second row from the bottom of the periodic table. They are fairly rare, their atomic numbers range from 57 (lanthanum) to 71 (lutetium). Some of these elements can be found in superconductors, glass production, or lasers.

Actinides: Are a group of metals in the bottom row of the periodic table. The actinide family contains fifteen elements starting with actinium through the entire row to lawrencium. All actinides are radioactive and some are not found in nature.

Beryllium is mostly used for military applications,but there are other uses of beryllium as well. In electronics, beryllium is used as a p-typedopant in some semiconductors, and beryllium oxide is used as a high-strength electrical insulator and heat conductor. Due to its light weight and other properties, beryllium is also used in mechanics when stiffness, light weight, and dimensional stability are required at wide temperature ranges.

Magnesium has many different uses. One of its most common uses was in industry, where it has many structural advantages over other materials such as aluminium, although this usage has fallen out of favor recently due to magnesium's flammability.Magnesium is also often alloyed with aluminium or zinc to form materials with more desirable properties than any pure metal. Magnesium has many other uses in industrial applications, such as having a role in the production of iron and steel, and the production of titanium.

Calcium also has many uses. One of its uses is as a reducing agent in the separation of other metals form ore, such as uranium. It is also used in the production of the alloys of many metals, such as aluminium and copper alloys, and is also used to deoxidize alloys as well. Calcium also has a role in the making of cheese, mortars, and cement.

Strontium and barium do not have as many applications as the lighter alkaline earth metals, but still have uses. Strontium carbonate is often used in the manufacturing of red fireworks,and pure strontium is used in the study of neurotransmitter release in neurons. Barium has some use in vacuum tubes to remove gases, and barium sulfate has many uses in the petroleum industry, as well as other industries.

Due to its radioactivity, radium no longer has many applications, but it used to have many. Radium used to be used often in luminous paints, although this use was stopped after workers got sick. As people used to think that radioactivity was a good thing, radium used to be added to drinking water, toothpaste, and many other products, although they are also not used anymore due to their health effects. Radium is no longer even used for its radioactive properties, as there are more powerful and safer emitters than radium

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