# Now You See It – Copper Cycle Lab
The purpose of the lab is to discover what happens when someone executes a series of procedures, beginning with copper metal. What is done
| What is observed
1. Started with copper, Cu (s).
| reddish, brownish, orange-ish, powder-like
| 2. Added nitric acid, HNO3 (aq).
| acid turns blue and smells like chlorine.
| 3. Added water, H2O (l).
| stayed the same
4. Added sodium hydroxide, NaOH (aq).
| changed consistency, gel-like
| 5. Heated the mixture
| becomes darker, dark-brown-like, shavings
| 6. Filtered the solid and added sulfuric acid, H2SO4 (aq), to it.
| sulfuric acid cleans off the copper
| 7. Added zinc, Zn (s).
| bubbles, zinc turns white
8. Poured off liquid and rinsed
| reddish specs, blue-ish liquid
* 250 mL beaker
* 100 mL beaker
* 2 graduated pipettes
* 50 mL graduated cylinder
* Funnel and filter paper
* Copper power, o.i g
* 8 M nitric acid, HNO3, 2 mL
* 1 M sulfuric acid, H2SO4, 15 mL
* 8 M sodium hydroxide, NaOH, 2 mL
* Stirring rod
* Hot plate
* Beaker tongs
* Zinc fillings, 0.1 g
| Symbol of chemical added
| Formula and name of copper compound
| What happened to the copper?
| Got a sample of copper
| Cu (s)
| Orange-brown powder
| Cu (s) solid copper powder
| Nothing yet.
| Added nitric acid
| HNO3 (aq)
| blue-ish liquid forms
| Cu(NO3)2 (aq) copper nitrate
| dissolves into liquid state
| Added sodium hydroxide
| NaOH (aq)
| small blue-ish chunks form
| CuOH (s)copper hydroxide
| clumps into blue-ish chunks
| Added heat (removes H2O)
| solution becomes muddy black-ish
| CuO (s)copper oxide
| heated into small, black, metallic almost shards
| Added sulfuric acid
| H2SO4 (aq)
| turns shards and liquid blue-ish color
| CuSO4 (aq)copper sulfate
| joins the sulfate after filtering
| Added zinc
| Zn (s)
| small, orange, metallic shards form in blue liquid
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