Question

1)please answer the above questions....​

Answer 1

Answer:

1. change in temperature.

2. combination reaction are known as exothermic because it gives barium metals and fluorine gas that will combine in highly exothermic reaction examples of combination reaction are magnesium oxide combing with carbon dioxide and reaction takes place more than one category

Answer 2

1)Fe + cuso4---------> Feso4+cu

2)Zn +H2So4 -------->ZnSo4+Cu.

Combination reaction =Two are more metals combies with each other to form a new product or substance

All exothermic reaction arecombination reaxtion

Ex : Mg +O2------->MgO

H2+O2--------->H2O