Reaction Energy Gizmo Synthesis Quiz

In an exothermic reaction, more energy is released in ______________ bonds than in absorbed in ____________ bonds.

• forming, breaking

• breaking, forming

In an endothermic reaction, more energy is absorbed in _____________ bonds than is released in ____________ bonds.

• forming, breaking

• breaking, forming

Breaking chemical bonds requires (a)   .

When a new bond forms, ____________ is released and temperatures ________________.

(a)  

Define enthalpy.

Forming bonds _______________ the enthalpy.

• increases

• decreases

Breaking chemical bonds _______________ enthalpy.

• increases

• decreases

In a calorimetry experiment, the water ________________ heat energy from the reactants.

• absorbs

• releases

(a)   is another word for heat energy.

How is $\Delta$ H calculated?