Water boils and melts at unusually high temperatures because of the size of the water molecule the weight of the water molecule the polar structure of the water molecule and hydrogen bonding gravity volcanic activity

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

d

explanation: