California Standards Chemistry
Unit 7: Kinetics and Thermodynamics
exchanged or transformed in all chemical reactions and physical changes
of matter. As a basis for understanding this concept:
Chemical reaction rates depend on factors that influence the
frequency of collision of reactant molecules. As a basis for
understanding this concept:
- 7a. Students know how to describe temperature and heat flow in terms of the motion of molecules (or atoms).
- 7b. Students know chemical processes can either release (exothermic) or absorb (endothermic) thermal energy.
- 7c. Students know energy is released when a material condenses or freezes and is absorbed when a material evaporates or melts.
Students know how to solve problems involving heat flow and temperature
changes, using known values of specific heat and latent heat of phase
Chemical equilibrium is a dynamic process at the molecular level. As a basis for understanding this concept:
- 7e. Students know the rate of reaction is the decrease in
concentration of reactants or the increase in concentration of products
- 7f. Students know how reaction rates depend on such factors as concentration, temperature, and pressure.
- 7g. Students know the role a catalyst plays in increasing the reaction rate.
- 7h. Students know how to use LeChatelierís principle to
predict the effect of changes in concentration, temperature, and
- 7i. Students know equilibrium is established when forward and reverse reaction rates are equal.