Question

what is combination reaction​

Answer 1

it's a reaction where two or more elements or compounds combines to form single compound.

a+b=ab

eg:

1) h2(g)+ cl2(g)=2hcl

2)Na2+h2o=2Naoh

3)s(s)+o2=so2

4)c+o2=co2

5)4li +o2=2 li 2o

6)2Mg+o2=2 Mgo

Answer 2

A combination reaction is a type of reaction in which two or more elements or compounds are combine to form single product.

Eg.

2Na + cl2 = 2Nacl.

H. + O2. = H2O

Edited.