Flashcards
Chemistry Test 2
Cards in this deck (15)
- 1SoluteThe smaller quantity of a substance dissolved into a solvent to form a solution.
- 2SolventThe larger quantity dissolved into a solute to form a solution.
- 3Why is water a great solvent?-Uneven distribution of electron charge.
-Bent molecule shape
-Polar molecule - 4How does water separate ions??Replaces the electrostatic attractions between oppositely charged ions with others between several water molecules and each ion.
- 5Why does dissolution occur?The attractions between each type of ion and several water molecules outweigh the attractions between the ions.
- 6What does it mean to become solvated?Surrounded closely by solvent molecules.
- 7The attraction between ions in an insoluble solution compares how to a soluble solution?The attraction between ions is greater than the attraction between the ions and water.
- 8What happens when an ionic compound dissolves?The solution's electrical conductivity increases dramatically.
- 9When electrodes are immersed into: distilled water, ionic solids, and an aqueous solution, what happens with the electrical conductivity?The distilled water and ionic solids create no current flow.
The aqueous solution created a large flow and lit the light bulb. - 10What is an electrolyte?A substance than conducts a current when dissolved in water.
Ex. soluble ionic compounds - 11What typically remains intact in solutions?Polyatomic ions
*potassium sulfate is an exception. - 12What are nonelectrolytes?substances that do not conduct an electric current in aqueous solutions.
- 13What is concentration?The quantity of solute dissolved in a given quantity of solution (or of solvent)
- 14What is the most common unit of concentration?Molarity (M) = moles of solute / liters of solution
- 15—
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- Flashcards on Chemistry Test 2, created by Courtney Judd on 25/02/2016.
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- Courtney Judd
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