AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

Physical Science Electrolytes and Solutions Flashcards

Terms : Hide Images
16297438617Which is typically in greater amount? Solute or solvent?Solvent, as it is dissolving the solute in the solution0
16297438618Will sucrose conduct electricity in water? Will sodium chloride?Sucrose (a sugar) will not, as it cannot break up into mobile ions, since it is molecular and thus composed of individual MOLECULES. Sodium chloride, on the other hand, is an ionic compound and will have a molecule-ion attraction w/ the polar molecules of water. Thus, it will be split into the mobile ions: Na+ and Cl-1
16297438619Definition of Dissociationa general process in which molecules (or ionic compounds such as salts, or complexes) separate or split into smaller particles such as atoms, ions or radicals, usually in a reversible manner2
16297438620Homogeneous mixtureUniform composition of particles throughout the sample3
16297438621AqueousA solution where water is the solvent4
16297438622Why do ionic compounds conduct electricity in water?Water is a neutral substance, but due to its molecular geometry (polarity), it has a partially positive end and a partially negative end. The partially positive end of the water molecule is attracted to the negative ions of the salt while the partially negative end is attracted to the positive ions of the salt. Ions in water are good conductors of electricity.5
16297438623Polar Molecule: Electrolyte or Nonelectrolyte?these covalently bonded molecules do have a slight difference in charge across opposite ends of the molecule, but are NOT considered to be electrolytes because they do not form ions when dissolved in water.6
16297438624Acids: Electrolyte or NonelectrolyteElectrolyte: Will break up into ions when dissolved in water7
16297438625Bases: Electrolyte or NonelectrolyteElectrolyte: Will break up into ions in water8
16297438626Salts: Electrolyte or NonelectrolyteSoluble ionic compounds are strong electrolytes, as they break up into mobile ions in water. This is due to the molecule-ion attratcion with polar H2O molecules.9
16297438627Nonpolar Molecule: Electrolyte or NonelectrolyteMolecules DO NOT have an overall net charge and thus CANNOT conduct an electric current. Nonpolar molecules do NOT dissolve in water (*like dissolves like*) and WILL NOT conduct.10
16297438628How can one differentiate between two aqueous solutions relative to their electrical conductivity?Utilize a conductivity apparatus to measure their electrical conductivites. The one that lights the bulb more will be the stronger electrolyte11
16297438629Electrolytesare solutes that are capable of conducting electricity12
16297438630Non-electrolytesare solutes that are not capable of conducting electricity13
16297438631Strong Electrolytescompletely break apart in solution and form ions. Since there are many ions present in solution, these substances are excellent conductors of electricity (ie. strong acids, strong bases, and soluble ionic compounds)14
16297438632Weak Electrolytesonly partially break apart in solution forming ions. Since there are not as many ions present in solution, these substances are weak conductors of electricity (ie. weak acids and weak bases)15
16297438633Nonelectrolytesdo not break apart at all in solution. Since no ions are formed, these substances cannot conduct electricity at all (ie. molecular compounds and insoluble ionic compounds)16
16297438634Strong AcidsHI(aq) - HBr(aq) - HCl(aq) - HNO3 (aq) - H2SO4 (aq) - HClO3 (aq) - HClO4 (aq)17
16297438635Strong BasesAny Group I metal hydroxide (KOH(aq), NaOH(aq), LiOH(aq), RbOH(aq), CsOH(aq)) The following Group II metal hydroxides • Ca(OH)2 (aq) • Sr(OH)2 (aq) • Ba(OH)2 (aq)18
16297438639Concentrated SolutionIf a solution has a considerable amount of solute present, then it is said to be a concentrated solution19
16297438640Dilute SolutionIf a solution has a very small amount of solute present, then it is said to be a dilute solution20
16297438643Dilutionis a process where a concentrated solution is reduced to a lower concentration by adding more solvent to the sample. Adding more solvent reduces the concentration of solute present per liter of solution21
16297438646NeutralizationProcess where an acid and base react to product water and a salt22

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!