Falcelinnada kiimikada: gubasho

Combustion requires fuel, oxygen, and an initial source of energy, usually heat, to start the reaction. The term 'burning' describes the reaction of substances with oxygen and is commonly used to refer to visible flames. Water is often formed in chemical reactions if oxygen and hydrogen atoms are present. Carbon dioxide is often formed in chemical reactions if oxygen and carbon atoms are present. Carbon dioxide and water both consist of small molecules that form easily with strong bonds.