NOTEBOOK Developing Possible solutions
1. Consider the materials available, and then sketch out your plan for constructing a sound shield
Make notes where you are meeting any criteria or constraints,

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.