Metallurgy, properties of metals
Source: Internet Earth was born about 4.5 billion years ago. Various formative processes have been taking in the core of the earth and it's surroundings since its creation today. These have resulted in the formation of various ores, liquids and gases. Physical properties of metals: Metal exist mainly in solid state. The metals namely, Mercury and gallium exist in liquid state at room temperature. Metals posses luster. The metallic luster goes on decreasing due to exposure to atmospheric oxygen and moisture and also in presence of some reactive gases. We know that metals have the properties namely, ductility and malleability. Similarly, all metals are good conductors of heat and electricity. Generally, all metals are hard. However, the alkali metal from group 1 such as lithium, sodium and potassium are exceptions. These metals can be cut with knife as they are very soft. Metals have high melting and boiling points. For example, tungsten metal has the highest melting point (3422°C