Purpose: Write the formula, name and description of binary and ternary ionic compounds.
Procedure: Move with your lab partner from station to station, recording the information needed to complete the data table below. Under cation and anion you will be writing the symbol AND the charge (ex. Mg 2+ ). Then figure out the name or formula of the compound, depending on what is given on the vial label.
Pre-lab Questions:
1.
Write the chemical formulas of the following compounds: a.
Aluminum Dichromate b.
Iron (III) Bromide c.
Magnesium Phosphate
2.
Write the name of the following chemical compounds: a.
Cu
2
O b.
AgNO
3 c.
NH
4
OH
Data: Prepare a data table similar to the one below for Vials 1A through 14A
Vial #
1A
2A
3A
…
14A
Color and
Description of
Compound
Cation Anion Compound
Formula
Also prepare a second data table with Vials 1B through 14B.
Compound Name
Post Lab Questions:
1.
What is the difference between ionic compounds and covalent compounds?
2.
Give the number (i.e. 2A) for 3 different vials that contained polyatomic ions.
3.
Which of the vials in the table have cations that have the same name, but display different colors?
4.
What do you think makes a compound have a color other than white? Make sure you go back and check to see if your answer makes sense.
NO CONCLUSION NEEDED!