is Mg + O2 → MgO a combination reaction or exothermis reaction???

Question

is  Mg + O2 → MgO a combination reaction or exothermis reaction???

thomaster · Answer

Combination reaction is a reaction where two or more substances combine to produce a single substance. 
Exothermic means that energy is released from the reaction.

Your reaction is: $$2Mg+O_2→2MgO + Energy$$

So it is a combination reaction AND it's an exothermic reaction.
It's an exothermic combination reaction :)

anonymous · Answer

oh it's both thank u soo much...

thomaster · Answer

no problemo :P

anonymous · Answer

i have another doubt... how come decpost of vegetable matter is an example of exothermic reaction???

anonymous · Answer

*decompost

thomaster · Answer

Decomposition is exothermic because the pile releases heat as the microbes in the pile release energy (heat) when they compost the matter.