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Mrs.Rynolds
Unit 4 Studying
Question | Answer |
---|---|
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. |