Ch Solutions I. How Solutions Form Definitions

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Presentation transcript:

Ch. 15 - Solutions I. How Solutions Form Definitions Types of Solutions Dissolving Rate of Dissolving

A. Definitions Solution - homogeneous mixture Solute - substance being dissolved Solvent - present in greater amount

A. Definitions Solute - KMnO4 Solvent - H2O

B. Types of Solutions Based on state of solvent. All solid-liquid-gas combos are possible. EX: dental amalgam (alloy of silver, mercury, etc.) liquid solute, solid solvent solid solution

C. Dissolving Solvation occurs at the surface of the solute solvent particles surround solute particles (+/- attraction) solute particles are pulled into solution

NaCl dissolving in water C. Dissolving NaCl dissolving in water

D. Rate of Solution Solids dissolve faster... more stirring small particle size (increased surface area) high temperature

D. Rate of Solution Gases dissolve faster... no shaking or stirring high pressure low temperature