Packet for Cu lab, naming and writing formulas, reaction types and ...

Next reaction
3) Put a pre-cut piece of aluminum wire in the test tube so it hooks over the top and is submerged in the liquid. Record
your observations.
Observations before reaction
Observations during and after the reaction
• CuCl 2:
• During reaction:
• Al:
• After reaction:
E. What evidence of chemical change did you observe? ________________________________________________
____________________________________________________________________________________________
F. Was the reaction an exothermic or endothermic reaction? Describe your answer: ___________________________
____________________________________________________________________________________________
G. The reaction you completed is described below. Write it in symbols:
The combination of copper (II) chloride with the aluminum wire produced a diluted solution of aluminum
chloride and a precipitate of copper.
H. Now circle the reactants, and put a square around the products. Remember to label each reactant and product as
(s), (l), (g), or (aq).
4) When the reaction is done (bubbling stops), shake off the copper from the aluminum wire, decant and discard the
liquid, and rinse the copper with distilled water.
5) For each bench-top, fill a 250 ml beaker with over 200 ml of deionized water and place the beaker on a hot plate.
Turn the hot plate to medium (around 200 F).
6) Set-up a ring-stand and place a funnel in the ring. Position your 400ml beaker below the funnel.
7) Get one 12.5 cm circle of filter paper. Mass the filter paper at one of the weighing stations and write this mass here:
Mass of my filter: ______________