Portage Learning Chemistry Module 6 TEST SOLUTIONS 100% CORRECT ANSWERS

Portage Learning Chemistry Module 6 TEST SOLUTIONS 100% CORRECT ANSWERS Amorphous solids - ANSWER particles are arranged in a random fashion Colligative properties - ANSWER physical properties of solvents that are dependent on the concentration of the solute present and the identity of the solvent but not on the identity of the solute. They include vapor pressure, freezing point and boiling point Colloids - ANSWER heterogeneous mixtures which appear to homogeneous onephase mixtures but are actually composed of particles too small to be seen with the naked eye Condensation - ANSWER process of gas being converted to liquid Critical point - ANSWER the temperature above which a substance cannot exist in the liquid phase Critical pressure - ANSWER the lowest pressure required for the substance to exist as a liquid at the critical point Crystalline solids - ANSWER particles are arranged in one of several different orderly, repeating, geometric patterns Electrolytes - ANSWER ionic or very polar compounds which dissolve to form solutions of ions which conduct an electric current Fluids - ANSWER substances like liquids and gases which have no fixed shape and so they flow Ionization - ANSWER the splitting of molecules to form ions Molality - ANSWER the number of moles of solute present per kilogram of solvent Molarity - ANSWER the number of moles of solute present per liter of solution Nonelectrolytes - ANSWER compounds which dissolve to form solutions of molecules which do not conduct an electric current Phase - ANSWER any state of matter such as solid, liquid or gas Strong electrolytes - ANSWER solutes that ionize completely Sublimation - ANSWER the conversion of a solid directly to the gas state Surface tension - ANSWER the force that causes a liquid which is in contact with a gas like air to assume a shape that has the least amount of surface area causing the surface to act like a thin elastic sheet Triple point - ANSWER the temperature and pressure at which the solid, liquid and gas phases can coexist Vapor pressure - ANSWER pressure exerted by vapor molecules above a liquid Weak electrolytes - ANSWER solutes that only partially ionize Why are liquids the least common state of matter? - ANSWER they can exist only within a relatively narrow range of temperatures and pressure