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Unit 4 Studying

pure substance has a composition that is the same throughout and does not vary from sample to sample
an example of a pure substance is water
mixture a blend of two or more kinds of matter, each of which retains its own identity and properties.
heterogeneous not uniform throughout
homogeneous uniform in composition
homogeneous mixtures are also called solutions
solutions homogeneous mixtures of two or more substances in a single phase
Solvent dissolving medium in a solution
Solute substance being dissolved in a solution
example of a Solvent solution water
example of a Solute solution sugar
Suspensions mixtures in which particles of a material are more or less evenly dispersed throughout a liquid or gas.
Alloys solid solutions in which the atoms of two or more metals are uniformly mixed.
Factors Affecting Solubility temperature, pressure, surface area, agitation, types of material
Acids substances that in solution can donate a Hydrogen Ion (Proton) to another substance.
Bases substances that in solution can accept a Hydrogen Ion from another substance or forms Hydroxide ions in solutions
Neutralization the process of mixing an acid and base
pH the measurement of the concentration of H+ ions and is related to the power of 10 of the concentration.
Electrolytes solutions that conduct electricity because of the free movement of ions.
Buffers these are substances in solutions that help prevent a change in pH or pOH.
Mole Refers to a measurement of molecules that is relative to its molecular weight.
Avogadro’s Number 6.02 x 10²³
Molarity Term for telling how many moles of a substance are dissolved in a solution.
non-electrolyte A substance that dissolves in water but does not conduct an electric current
Solubility ability of one substance to dissolve in another at a given temperature and pressure.
Solution equilibrium reached when the physical state in which the opposing process of dissolution and crystallization of a solute occurs at equal rate
Insolubility the inability of one substance to dissolve in another substance.
Saturated Solutions
Unsaturated Solutions
Supersaturated Solutions a solution that contains more dissolved solute than a saturated solution under the same conditions.
Created by: S732596