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26 Cards in this Set

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  • Back
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A mixture that looks uniform when stirred or shaken that separates into different layers when it is no longer agitated.
What is a Suspension? (186)
Ex. orange juice w/ pulp, chocolate milk
A mixture of very tiny particles of pure substances that are dispersed in another substance but do not settle out of the substance.
What is a Colloid? (187)
Ex. Gelatin, blood, fog, whipped cream, marshmallows, et. al.
Any mixture of immiscible liquids in which the liquids are spread throughout one another.
What is an Emulsion? (188)
Looks like a single substance unless it is magnified to show it as a colloid.
Ex. cream, mayonnaise,
A homogeneous mixture of two or more substances uniformly spread throughout a single phase.
What is a solution? (190)
A solute dissolves in a solvent to form a __?___. Ex. salt water, air, vinegar,
The substance that dissolves in a solution.
What is a Solute? (190)
Generally a solid, Ex. salt dissolved in water
The substance that dissolves the solute to make a solution.
What is a Solvent? (190)
Generally a liquid; water is the universal solvent.
The quantity of solute dissolved in a given quantity of solution.
What is a Concentration? (196)
Dilute is when a small quantity of solute is dissolved in a large volume of solvent; while ? is when a large quantity of solute is dissolved in the same volume of solvent.
A solution that is able to dissolve more solute.
What is an Unsaturated Solution? (196)
This capacity for dissolving more solute can be extended by stirring and heating the solution.
A solution that cannot dissolve any more solute at the given conditions.
What is a Saturated Solution? (196)
When adding more solute just settles to the bottom of the container.
The greatest quatity of a solute that will dissolve in a given quantity of solvent to produce a saturated solution.
What is Solubility? (197)
Another variable to this is the temperature of solvent. Also, not all solutions become saturated such as methanol-water solution where any amount of methanol will dissolve.
A solution holding more dissoved solute than is specified by its solubility at a given temperature.
What is a Supersaturated Solution? (197)
An unstable solution because the solute's solubility is exceeded for a short time. May cause crystalization.
A concentration unit of a solution that expresses moles of solute dissolved per liter of solution.
What is Molarity? (198)
Concentration or _____ = moles of solute
divided by liters of solution; M = mol/L
A compound that can reversibly change color in a solution, depending on the concentration of H3O+ ions.
What is an Indicator? (199)
Ex. Litmus paper: Acids turn blue litmus paper red and Bases turn red litmus paper blue.
A compound that can reversibly change color in a solution, depending on the concentration of H3O+ ions.
What is an Indicator? (199)
A measure of the hydronium ion concentration in a solution.
What is pH? (202)
It is important to keep this balanced in nature, especially human health. The term __ originates from the French words pouvoir Hydrogene meaning "hydrogen power".
A reaction in which hydronium ions from an acid and hydroxide ions from a base react to produce water molecules.
What is a Neutralization Reaction? (204)
In this reaction, the resulting solution is more neutral than either of the reactants.
These solutions have a pH of 7, acidic solutions have a pH of less than 7, and basic solutions have a pH of greater than 7.
What is a Neutral Solution? (206)
A strong Acid solution will ionize completely, a strong Base solution will dissociate completely, and two solutions of equal concentrations and equal volumes are balanced or __?___.
A cleaner that dissolves in both water and oil.
What is Soap? (207)
An emulsifier that lets oil and water mix and keep from separating.
A nonsoap water-soluble cleaner that can emulsify dirt and oil.
What is a Detergent? (208)
Works best with "hard" water which contains dissolved salts of ions Mg2+,Ca2+, & Fe3+
A substance that kills harmful bacteria or viruses.
What is a Disinfectant? (209)
Ex. Bleach NaClO2 or NaOCl in water.
A weak base that neutralizes excess stomach acid.
What is an Antacid? (210)
Ex. Magnesium Hydroxide (Milk of Magnesia), Tums, et. al.
A substance that donates hydrogen ions, H+, to form hydronium ions, H3O+, when dissolved in water.
What is an Acid? (199)
Sour, corrosive, dangerous to skin if strong, diluted ones will burn skin, turn blue litmus paper to red.
A substance that either contains hydroxide ions, OH-, or reacts with water to form hydroxide ions.
What is a Base? (210)
Properties are tastes bitter, slippery to touch, will burn if strong, and turn red litmus paper blue.
An ionic compound composed of cations bonded to anions, other than oxide or hydroxide anions.
What is a Salt? (205)
Often ionic compounds soluble in water.
Ex. Aluminum Sulfate Al2(SO4)3 to purify water, Potassium Chloride KCl a table salt substitute, Sodium Hydrogen Carbonate NaHCO3 is Baking Soda
A basic solution that can either be used as a disinfectant or to remove colors and stains.
What is Bleach? (209)
An example of a disinfectant and cleaner. It feels slippery to touch and can burn skin or holes in cloth if concentrated. Removes the color of unwanted stains by oxidizing the compound responsible. ( a whitener)
A weak base that neutralizes excess stomach acid by changing the pH of a substance.
What is an Antacid? (210)
Ex. Magnesium Hydroxide (milk of magnesia) , Rolaids, et. al. Counteract stomach acid as a weak base.