|Class 10 Chemistry Carbon and Its Compounds||Introduction|
All the substances that surround us have carbon components within them. All living and non-living components in the environment are carbon based.
Human body contains 18% of carbon and act as the basic building block of the cells present in human body. It is necessary for the cellular respiration of the various parts of human body.
Carbon is basically an element and is of extensive importance and significance, both in its elemental form and in its combined form for the survival on earth. 0.02% of carbon is present in the earth’s crust in the form of carbonates, hydrogen carbonates, coal, petroleum and other minerals whereas 0.03% of carbon is present in the atmosphere.
Fig. Coal mined out from the earth’s crust