Chemistry of Metals and Alloys

Gallium has an unusually low melting point of about 30°C (86°F), which is near room temperature. This means gallium will melt in your hand. Sodium and potassium have low melting points but not as low as gallium, while sulfur is a non-metal. Gallium's low melting point makes it useful in high-temperature thermometers.

TItanium is known as the space age metal and  is expected to replace most of the metals used around the industries. However, its expensive and difficult mining process is keeping it from being used so commonly as aluminium or steel. Titanium is found to be stronger, durable and corrosion resistive in comparison to steel. It has the highest strength to weight ratio of all the metals. All these properties, along with its light weight, make it an ideal metal for space crafts and military jets. It is also used in making highly water - resistant diving watches.

Mercury is the only liquid. Except mercury all metals are solids at room temperature. Mercury is used for making thermometer.

Titanium, sodium and zirconium metals are used in atomic energy and space science projects.

Human body if formed of many non metals Carbon, Nitrogen, Oxygen, Hydrogen, Sulphur, Phosphorus and a bit of Chlorine. 
Fertilizers are composed of Nitrogen,phosphorous,potassium-NPK
Crackers are formed of Phosphorous and sulphur.

Copper is metal generally mixed with gold while making ornament to strengthen ornaments.

Quick silver is the chemical element mercury$(Hg)$. It was formerly known as hydrargyrum.

Shielding reduces the intensity of radiation depending on thickness. A quantity known as the halving-thicknesses is used to calculate. The half value layer of lead is 1.0 cm.

Metal which is silvery light, malleable and ductile and the boiling point is around $2050 ^\circ C$ is aluminium.

Metals were discovered and starts using approximately 5000 years ago. First metal to be used was the copper. Then after silver and gold. These metals were found in free state in nature.

Metals used to make bullet proof alloy steel is to titanium.

Metals are available as micro-elements in our body. They are needed for conduction of nerve impulses, to carry oxygen by blood, to facilitate enzyme reactions and more. So, metals are used in medicine to cure any metal deficiency diseases in humans and animals. Ex. iron is a part of haemoglobin a biomolecule. Hence, it is used as ferrous sulphate to cure some forms of anaemia.

Metals like titanium, aluminum, magnesium are widely used in medicine for roles like antacids. They are specially studied under the subject of inorganic chemistry.

Gold has the following uses. It does not rusts and supports health. It gives protection from Sun. So, it is used in making jewellary.