Question

energy changes in chemical reactions: tutorial
tiles
chemical energy transition state chemical reaction activation energy temperature
pairs
a measure of the average kinetic energy of particles
energy that a substance has because of the arrangement of its atoms
the process of breaking down an existing set of substances to form a new set of substances
a phase in a reaction in which existing bonds break to form new bonds

Explanation:

1. Temperature is defined as a measure of the average kinetic energy of particles.
2. Chemical energy is the energy that a substance has because of the arrangement of its atoms.
3. A chemical reaction is the process of breaking down an existing set of substances to form a new set of substances.
4. The transition - state is a phase in a reaction in which existing bonds break to form new bonds.

Answer:

1. Temperature
2. Chemical energy
3. Chemical reaction
4. Transition state