Asia-Pacific Forum on Science Learning and Teaching, Volume 17, Issue 2, Article 5 (Dec., 2016) Şenol ŞEN, Ayhan YILMAZ, and Ömer GEBAN The effect of Process Oriented Guided Inquiry Learning (POGIL) on 11th Graders' conceptual understanding of electrochemistry Previous Contents

Appendix B

Students’ Answers to Question 12 in ECT Post-test

12a) Which is true for Galvanic cells?			12b) Which explains the reason for your answer best?
*A. Galvanic cells work spontaneously.	Exp. %	Control %	* a) In galvanic cells, reactions in the two electrodes tend to happen spontaneously and a flow of electrons happens from the anode into the cathode through and external conductor.		Exp. %	Control %
	94,64	66,10			78,57	44,07
B. Anode is positively charged because it releases electrons; cathode is negatively charged because it attracts electrons.	Exp. %	Control %	b) The place of anode and cathode is determined by the physical placement of half-cells		Exp. %	Control %
					7,14	5,08
	0,00	6,78
C. Electrons enter the electrolyte from the cathode, they are carried by electrolyte and salt bridge, and then they complete the circuit and they emerge in the anode.	Exp. %	Control %	c) Anode is always on the left.		Exp. %	Control %
	1,79	3,39			8,93	15,25
D. Electrons flow in aqueous solutions without assistance of ions.	Exp. %	Control %	d) Electrons can move in solutions just like ions do.		Exp. %	Control %
					1,79	5,08
	1,79	11,86
E Only negatively charged ions form a flow of current in electrolyte and salt bridge.	Exp. %	Control %	e) Conductivity in solutions is ensured only through the movement of negatively charged ions.		Exp. %	Control %
	1,79	6,78			3,57	25,42
The answers that I have given to the two questions above:				a. I am sure
				b. I am not sure.