Question

1)define combination reaction .give one example of combination reaction which is also exothermic. 2) write the chemical equation of the reaction in which the following changes have taken place with an example of each . a)change in colour . b) change in temperature c)formation of precipitate D)evolution of gas . ques 3 2g of ferrous sulphate crystals are heated in a dry boiling tube. 1) list one observation . 2) name the type of chemical reaction taking place. 3) write the chemical equation for the reaction .

Answer 1

The reaction in which two elements combine together to form a compound is called combination reaction