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Qualitative Analysis
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A method of analysis that focuses on identifying ions in a solution rather than measuring their amounts.
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Cation
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A positively charged ion, which is the focus for identification in this experiment.

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18 Terms

1
Qualitative Analysis
A method of analysis that focuses on identifying ions in a solution rather than measuring their amounts.
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2
Cation
A positively charged ion, which is the focus for identification in this experiment.
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3
Precipitate
A solid that forms and settles out of a liquid mixture upon mixing two solutions.
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4
Solubility Categories
Products formed in the experiment are categorized as soluble (S), slightly soluble (SS), or insoluble (I).
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5
Balanced Molecular Equation
A chemical equation that shows the reactants and products in their correct proportions, without including charges.
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6
Ionic Equation
An equation that shows all the ionic species present in a solution during a reaction.
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7
Net Ionic Equation
An equation that shows only the particles that participate in a chemical reaction, excluding spectator ions.
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8
Qualitative Observations
Observations made based on physical characteristics, such as color and form of a precipitate.
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9
Double Replacement Reaction
A type of chemical reaction where two compounds exchange ions or form new compounds.
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10
Spectator Ion
An ion that does not participate in the chemical reaction and is present in the solution throughout.
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11
Electro Neutrality
The principle that compounds must have no net charge, meaning the total positive charge must balance the total negative charge.
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12
Solubility Rules
Guidelines used to predict the solubility of ionic compounds in water.
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13
Laboratory Safety
Practices followed to maintain safety in the laboratory, such as using fume hoods for hazardous materials.
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14
Data Recording
The act of accurately noting observations and results according to established scientific protocols.
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15
Analyzing Results
The process of comparing experimental findings with known information to identify unknown substances.
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16

Soluble Salt (S)

The reaction mixture will be "water clear." The solution in the test tube may be colored, but there is no precipitate.

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17

Slightly Soluble Salt (SS)

The reaction mixture will have some cloudiness but no obvious solid settling to the bottom of the test tube.

Note that a precipitate is any solid formed as the result of a chemical reaction. Thus, the cloudiness that is observed is indeed a (light) precipitate.

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18

Insoluble Salt (I)

The reaction mixture will be an opaque mixture with solid settling to the bottom of the test tube.

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