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# Science and Technology/Engineering Curriculum Framework - Spring 2001

## Chemistry, Grade 10-11

Additional Ideas for Developing Investigations and Learning Experiences and Suggested Extensions to Learning in Technology/Engineering are in Appendix III.

### Equilibrium and Kinetics

Broad Concept: Chemical equilibrium is a dynamic process that is significant in many systems (biological, ecological and geological). Chemical reactions occur at different rates.

 9.1 Write the equilibrium expression and calculate the equilibrium constant for a reaction. 9.2 Predict the shift in equilibrium when the system is subjected to a stress (LeChatelier's principle). 9.3 Identify the factors that affect the rate of a chemical reaction (temperature, concentration) and the factors that can cause a shift in equilibrium (concentration, pressure, volume, temperature). 9.4 Explain rates of reaction in terms of collision frequency, energy of collisions,and orientation of colliding molecules. 9.5 Define the role of activation energy in a chemical reaction.

Boldface type indicates core standards for full-year courses. An asterisk (*) indicates core standards for integrated courses.

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