Background information

Activated coal is a form of carbon that has many applications including purification of nickel, water, air

and even has some uses in medicine; while being used in many industries its core function mainly stays

the same which is purification due adsorption; it has affinity for ions and many gases, solids and liquids.

For example, carbon$-$sulfur compound can be used to attract mercury which is poisonous another

example is being used in chemicals to stick to impurities for easier removal.

Please note that absorption and adsorption are not the same, absorption is simply absorbing materials

into the body which adds to its volume while in adsorption the adsorbent will not penetrate the body

but sticks to its outer surface only. Which gives the importance of the surface area of the adsorbent for

instance no matter how large or bulky is the volume of the coal; impurities can only stick to the outer

area available which is the surface area. Which leads to the activation. When coal is activated it

becomes activated coal which is different in structure by having many pores compared with the normal

coal which is not porous which ultimately leads to increased surface area. $**$Read the text then answer:

$1)$ What are the differences between absorption and adsorption, coal is known for which one? $2)$The coal is connected with which cycle of matter?$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$3)$ What does activation do to the coal?$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$4)$ What is one of the activated coals uses?$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$