Thermal Conductivity of Copper

Thermal Conductivity of Copper

Introduction

Most of us are aware of the fact that elements are classified as either metals or nonmetals. The appearance of metals makes them easy to spot, owing to most of them being lustrous, shiny, brittle and hard by nature. Nonmetals, on the other hand, would mostly resemble gasses coupled with them having electronegative features. Presently we have the periodic table showing metals on the left side and nonmetals on the right. There is an imaginary line in the table where the elements display the features of both metals and nonmetals, and those are collectively called as metalloids.

One of the most known metals which form part of our lives and known to us is Copper as it is known to the mankind for thousands of years. Copper has a reddish brown color which makes them easier to distinguish from others.

Chemical Properties of Copper

Copper just like other metals creates copper oxides the moment they get some air exposure. This means that the reaction happens with oxygen present in the air and copper. This is not similar to the formation of rust that happens on metals like iron and actually would from protective layer that preserve the metal.

There is the common misconception that copper would react when it comes in contact with water where the presence of oxygen is the real cause behind it. A real-world example would be that of the Statue of Liberty that is built using copper in its purest form and looks greenish owing to the chemical reactions

Once it is exposed to different kinds of sulfides, copper sulfides are formed which would discolor the copper metal.

Thermal Conductivity of Copper

Material Thermal conductivity

(cal/sec)/(cm² C/cm)

Thermal conductivity

(W/m K)*

Copper 0.99 385.0

Copper is renowned for being a good conductor of electricity and heat. This happens because the delocalized electrons lying inside the solid lattice of metals have the freedom to move freely in their lattice.  These would act as the transporters of heat and electric charge from one end to the other and turn the metals into good conductors. With the rise of temperature, the thermal conductivity also tends to decrease. This is because the movement of free electrons is blocked due to the kernel of metal ions with temperature vibration being high. For instance, if we use a copper bar and heat the bar using a burner, the atoms lying in that part of the bar would vibrate and scatter the heat through the bar.

From the above discussion, you would have realized as to why copper is considered as one of the best conductors available on the planet and this is the only reason why it has been and used by people around the world for meeting their power and energy demands.

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Practise This Question

How many bonds are present in CO32 ion?