Ex: NaCl + H2O the Na ion and Cl ion become hydrated and gradually • – move away from the crystal into solution. Each ion in the solution acts as though it were present alone: So there is • only a solution containing Na+ and Cl- ions uniformly mixed with H2O particles 2) Solvent-solvent attraction is broken up; ____________________ 3) Solute-solvent attraction is formed; ____________________ ____________________= surrounding of solute particles by solvent • particles Solute particles becoming Solvent particles being Solvent particles being separated from solid moved apart to allow attracted to and solvating (energy absorbed solute particles to enter solute particles (energy liquid (energy absorbed) released) C. Factors Affecting the Rate of Dissolving (Increase Solution Rate): 1) Grinding: increases surface area 2) allows solvent continual contact with solute Stirring: 3) Heating: increases kinetic energy; increases mixing D. Electrolytes and Nonelectrolytes 1) ____________________= a substance that dissolves in water to give a solution that conducts electric current 2) ____________________= a substance that dissolves in to give a solution that does NOT conduct an electric current 3) ____________________of electrolytes can conduct electric current: a) The positive ions and the negative ions ____________________ (separate) in solution. The ____________________ions can move a charge from one point in the solution to another point 4) Solutions of ____________________CANNOT conduct electric current:
• Ex: NaCl + H2O – the Na ion and Cl ion become hydrated and gradually move away from the crystal into solution. • Each ion in the solution acts as though it were present alone: So there is only a solution containing Na+ and Cl- ions uniformly mixed with H2O particles 2) Solvent-solvent attraction is broken up; ____________________ 3) Solute-solvent attraction is formed; ____________________ • ____________________= surrounding of solute particles by solvent particles Solute particles becoming separated from solid (energy absorbed Solvent particles being moved apart to allow solute particles to enter liquid (energy absorbed) Solvent particles being attracted to and solvating solute particles (energy released) C. Factors Affecting the Rate of Dissolving (Increase Solution Rate): 1) Grinding: increases surface area 2) Stirring: allows solvent continual contact with solute 3) Heating: increases kinetic energy; increases mixing D. Electrolytes and Nonelectrolytes 1) ____________________= a substance that dissolves in water to give a solution that conducts electric current 2) ____________________= a substance that dissolves in to give a solution that does NOT conduct an electric current 3) ____________________of electrolytes can conduct electric current: a) The positive ions and the negative ions ____________________ (separate) in solution. The ____________________ions can move a charge from one point in the solution to another point 4) Solutions of ____________________CANNOT conduct electric current:
SOLUTION%20Notes.docx