Name: _________________________________
A__: Tue, Dec 15 B__: Mon, Dec 14
#29 Cu Retrieval Lab – Part II
Mr. Wegert – Chemistry
Do Now : Read passage, annotate, answer questions. Turn over worksheet, read BOC when done.
The Big Idea for the second quarter in Chemistry is “Show Me the Money!” because students will be redesigning one of the six different coins currently in circulation in the United States. Coins are the subject because they are made of metals, and usually more than one. We are studying metals in
Chemistry because most elements are metals. In redesigning coins, students will need to consider several factors, including the relative reactivity of the metals used, their cost compared to the value of the coin, their size relative to the other US coins, and their appearance. They learned that which column or group in the Periodic Table a metal is in indicates its relative reactivity and how they will behave in chemical reactions. They also studied chemical reactions and how to balance them to understand how metals react and how metals can be extracted from compounds they are contained in.
1.
Why is this quarter’s Chemistry
Big Idea “Show Me the Money”?
2.
What will students be redesigning?
3.
Why are we studying metals?
4.
Why are we studying chemical reactions?
5.
What else will students need to consider besides reactivity in their coin redesign?
#29 Cu Retrieval Lab – Part II

Purpose: ____________________________________________________________________________
Procedure Checklist (in pairs):
Data Table: Copper Retrieval Lab – Part II (mass in grams, g)
NOTE: #3, 4, 5 from last class worksheet, #6-7 Today, #8-13 to be completed next class
3. Mass of CuO=
4. Mass of large filter paper=
5. Mass of small filter paper=
6. Mass of Filter + Cu=
8. Mass of Filter + Cu=
7. Mass of Cu retrieved (I)=
9. Mass of Cu retrieved (II)=
10. Total Mass of Cu retrieved (I + II)=
11. % Composition of Cu in CuO= 12. Mass of Cu available in CuO sample=
13. % Yield from Cu Retrieval Labs= %
#29 Cu Retrieval Lab – Part II
In the 1 st
Cu lab at left, where did the copper’s added mass come from?
What was added to the
CuO to retrieve copper in the 2 nd Cu lab at left?
What was added to copper chloride to retrieve copper in today’s lab above?
HW: Complete Table Above _____/10 pts
#25__ #26__ #27__ #28__ #29__ ___/50 pts