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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. |
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S732596
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