Reversible Reactions and Equilibrium

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  1. 2. Any change in concentration, pressure, or temperature that breaks the state of equilibrium in a chemical system.
  2. 3. The relative concentrations of reactants and products at equilibrium, indicating whether the forward or reverse reaction is favored.
  3. 6. The rule stating that if a stress (change) is applied to a system at equilibrium, the system will shift its position to counteract the disturbance.
  4. 8. Reaction A reaction in which two soluble ionic compounds in an aqueous solution form an insoluble solid called a precipitate.
  5. 10. The specific part of the universe being studied in a chemical reaction (e.g., the chemicals inside a beaker).
  6. 12. The SI unit used to measure the amount of a substance; one mole contains 6.022 X 10 (23) particles.
  7. 13. The force exerted by gas particles colliding with the walls of their container; affecting equilibrium only when gases are involved.
  8. 14. Reaction A reaction that releases energy (heat) to the surroundings; heat is treated as a product.
  9. 16. The starting substances in a chemical reaction, located on the left side of the arrow.
  10. 17. A substance that increases the rate of a reaction without being consumed; it helps reach equilibrium faster but does not change the equilibrium position.
  11. 19. Reaction A reaction that absorbs energy (heat) from the surroundings; heat is treated as a reactant.
  12. 20. The symbol used in a chemical equation to indicate that the reaction is reversible and can proceed in both directions.
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  1. 1. An insoluble solid that emerges from a liquid solution during a chemical reaction.
  2. 4. A measure of the average kinetic energy of particles; changing this provides energy to favor either the endothermic or exothermic direction.
  3. 5. The substances formed as a result of a chemical reaction, located on the right side of the arrow.
  4. 7. The reaction that proceeds from right to left (products reforming reactants).
  5. 9. A state of balance in which the rates of the forward and reverse reactions are equal, resulting in no net change in the concentrations of reactants and products.
  6. 11. The amount of a particular substance in a given volume of solution.
  7. 15. A chemical reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously.
  8. 18. The reaction that proceeds from left to right (reactants forming products).