Tag Archives: compounds

Matter, Atomic Structure, and Bonding: The Copper Cycle

We began class by assembling a list of the elements and compounds observed yesterday:

Vial Name Chemical Formula Description
1 Aluminum Al silver pebbles
2 Silicon Si shiny dark silver jagged rocks
3 Zinc Zn bluish-grey with patina
4 Sulfur Si yellow shards, rotten egg smell
5 Zinc Zn corroded
6 Zinc Zn silver frosted corn flakes
7 Sodium Chloride NaCl clear liquid
8 Trisodium Phosphate Na3PO4 clear liquid
9 Sodium Nitrate NaNO3 clear liquid
10 Sodium Fluoride NaF clear liquid
11 Aluminum Chloride AlCl3 misty blue liquid
12 Copper Chloride CuCl2 transparent blue
13 Copper Cu copper colored beads
14 Calcium Sulfate CaSO4 white powder
15 Magnesium carbonate MgCO3 Baking powder (creamy white)
16 Vinegar (acetic acid) C2H4O2 Sour smell, clear liquid
17 Calcium Carbonate CaCO3 Large greyish-white rough rocks
18 Calcium Chloride CaCl2 Compressed white pellets, dusty

Note: The numbers in the chemical formulas should be written as subscripts.

After the review, students received the Lesson 7 worksheet, the copper cycle experimental steps handout, and the Lesson 8 worksheet.  We decided to skip the lesson 7 worksheet because we do not currently have access to reliable fume hoods (required for the copper cycle lab) and because the lesson 8 worksheet includes students responses from the lesson 7 worksheet.  After reviewing the content in the Lesson 7 PowerPoint, we watched two versions of the Copper Cycle Lab on YouTube (below):

Students should read through Lessons 7 and 8 in the textbook and complete the questions at the end of the lessons, and be prepared to ask questions about the content in class tomorrow.