Lab E4 Flashcards
Provides a chemical or physical information about a sample.
It can be classified as:
Chemical Analysis
Qualitative or Quantitative
Is employed to know the constituents of an unknown sample
Qualitative Chemical Analysis
Usually performed after quantitative analysis which is used to determine the amount of concentration of the constituent of interest
Quantitative Chemical Analysis
A qualitative analysis for a particular ion involves addition of ____ that will cause a component to react in a particular way.
Reagent
Identification involves the observation of characteristics like:
Solution color, formation, and color of precipitates, evolution of gas, etc.
If modern analytical chemistry is dominated by _______ however the roots of analytical chemistry and some principles used in modern instruments are taken from _______ based on qualitative analysis.
sophisticated instrumentation
traditional techniques
Basis of qualitative analysis
Can an ion be identified?
No two ions will react the same way in all their chemical reactions.
By predetermining what the particular reaction will produce if a certain ion is present, the ions in the solution can be identified
How can the chemical properties of a chemical be determined?
By noting its
solubility
acidity/basicity
acid/base reaction
precipitation reaction
redox reaction
starch-iodine reaction
identify the chemical name, formula and common use of the following chemicals:
alum
baking soda
chalk
corn starch
epsom salt
iodized salt
rock salt
sugar
photofixer
silica
sand
sugar
