Question

burning of Mg ribbon in air and collection of magnesium oxide

what type of the reaction taking place in this activity,where heat is given out along with the formation of a single product?

Answer 1

Hey mate ☺

Since one product is formed , it's a combination reaction .

And we know that in exothermic reaction , heat is evolved .
So , of course it's an exothermic reaction

Answer 2

This is the combination and exothermic reaction in which the two reactant are combine to form single product with the evolution of heat energy.
Mg+O2---------Mgo+heat.