How can one explain the structure, properties, and interactions of matter?
How can humans affect the rate of a chemical reaction?
Explain Collision Theory – Molecules must collide in order to react, and the must collide with the correct or appropriate orientation and with sufficient energy to equal or exceeded the activation energy.
Explain qualitatively that reaction rate is proportional to number of effective collisions
Explain the nature of reactants can refer to their complexity and the number of bonds that must be broken and reformed in the course of the reaction
Explain how temperature (kinetic energy), concentration, and/or pressure affects the number of collisions
Explain how increased surface area increases the number of collisions
Explain how a catalyst lowers the activation energy, so that at a given temperature, more molecules will have energy equal to or greater than the activation energy
Interpret potential energy diagrams for endothermic and exothermic reactions including reactants, products, and activated complex – with and without the presence of a catalyst.
Define chemical equilibrium for reversible reactions
Distinguish between equal rates and equal concentrations
Explain equilibrium expressions for a given reaction
Determine the effects of stresses on systems at equilibrium (Adding/removing a reactant or product; adding/removing heat; increasing/decreasing pressure)
Relate the shift that occurs in terms of the order/disorder of the system