What is rock?

When different minerals are mixed together, they form hard particle. The matter produced from these particles mixed together is called rock.

What is heat of combustion?

The amount of heat produced by complete burning of 1 mole of substance in oxygen is called heat of combustion of that substance.  Fire is a chemical reaction in which energy in the form of heat is produced. When forest fuels burn, there is a chemical combination of the oxygen in the air with woody … Read more

What is ionic bond?

The cations and anions formed by electron gaining-losing are attached to the compound molecule with a static electric attraction force which is called ionic bond.