Question

In a Synthesis or Combination: In this type of reaction two or more substances (reactants) react to produce one product. Combination reactions are exothermic (heat is released).

Answer 1

Not all synthesis reactions may be exothermic.

Step-by-step explanation:

An exothermic reaction is a reaction in which heat is given to the environment. This occur if the reactants energy is higher than the barrier energy for the product, the excess is converted into kinetic energy of the product, it is observed as heat released and marked temperature increase.

Answer 2

True

Step-by-step explanation:

A combination reaction is also known as synthesis reaction it is a reaction where two or more elements or compound (reactants) combine to form a single compound (Products) such reactions may be represented by the equations of the following form X+Y→XY the combination of two or more elements and they form one compound is known as combination reaction for example C + O2→ CO2 carbon completely burn in oxygen to give carbon dioxide combination reactions are completely exothermic because where the bond form between the reactants heat is released.