Question

multiple choice question which of the following describe how energy is used in chemical reactions? energy stored in certain chemical bonds is transformed into kinetic energy which breaks those bonds (as atoms move quickly apart). energy stored in certain chemical bonds can be used to make new bonds. energy stored in chemical bonds is always converted to heat energy, some of which has the capacity to perform work.

Explanation:

In chemical reactions, energy stored in chemical bonds can be used to break existing bonds (as atoms gain kinetic - energy to move apart) and to form new bonds. Chemical - bond energy is not always converted to heat energy only; it can be converted to other forms like kinetic energy.

Answer:

Energy stored in certain chemical bonds is transformed into kinetic energy which breaks those bonds (as atoms move quickly apart); Energy stored in certain chemical bonds can be used to make new bonds.