Jeff Bracken
@wnchem.bsky.social
Chemistry teacher at Westerville North High School in Westerville, Ohio.
Absolutely! Had the chance to talk with a former student in had in 1997. Hadn't seen her since she graduated in 2000! #GreatMemories
December 20, 2024 at 2:43 AM
Absolutely! Had the chance to talk with a former student in had in 1997. Hadn't seen her since she graduated in 2000! #GreatMemories
I had each set of lab partners add one squirt of each known solution in the well plates according to the paper template. Our school lacks windows, so lights off is pitch black. Fume hood and ViewSonic display screen were indirect light for students.
November 25, 2024 at 11:23 PM
I had each set of lab partners add one squirt of each known solution in the well plates according to the paper template. Our school lacks windows, so lights off is pitch black. Fume hood and ViewSonic display screen were indirect light for students.
We tested a number of different solutions. Our best results were with:
1 M NaNO3
1 M KNO3
2 M LiCl
2 M CaCl2
2 M SrCl2
1.2 M BaCl2
1 M CuSO4
1 M NaNO3
1 M KNO3
2 M LiCl
2 M CaCl2
2 M SrCl2
1.2 M BaCl2
1 M CuSO4
November 25, 2024 at 10:49 PM
We tested a number of different solutions. Our best results were with:
1 M NaNO3
1 M KNO3
2 M LiCl
2 M CaCl2
2 M SrCl2
1.2 M BaCl2
1 M CuSO4
1 M NaNO3
1 M KNO3
2 M LiCl
2 M CaCl2
2 M SrCl2
1.2 M BaCl2
1 M CuSO4
Another fun twist is giving each student two unlabeled solutions. I add blue food coloring to make them all look like copper solution. #FunTimes4Everyone
November 25, 2024 at 9:18 PM
Another fun twist is giving each student two unlabeled solutions. I add blue food coloring to make them all look like copper solution. #FunTimes4Everyone
Love this. What % of isopropyl alcohol are you using? 70%, 91%, or 99%.
November 18, 2024 at 9:02 PM
Love this. What % of isopropyl alcohol are you using? 70%, 91%, or 99%.