1.   The reaction system thus loses energy.

2.   In an exothermic process the energy lost by a reaction system is equal to the energy gained by its surroundings.

3.   The entropy change of a chemical reaction system is given by equation and the entropy change of the surroundings is given by equation above.

4.   In conclusion, although the enthalpy change for the reaction system is negative, the total entropy change which accompanies the reaction is positive.

5.   In reaction systems at constant pressure the change in energy is given by the enthalpy change.

6.   In these reactions the reaction system can gain energy and still proceed spontaneously.

7.   The Gibbs free energy change therefore takes into account the enthalpy change of a reaction system and its entropy change.

8.   He said that Iraq had rapid reaction transportation systems for moving material out of the way of inspectors on short notice.

9.   In his paper he recounted how he had put his theory into practice by solving a standard problem with a DNA reaction system.