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By Mehmet Fatih Tasar (Ed.)

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Extra info for Proceedings of the World Conference on Physics Education 2012 (WPCE)

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The bond is a relatively weak bond. C. Breaking the bond releases a significant quantity of energy. D. A relatively small quantity of energy is required to break the bond. Figure 13. A question probing the bonding misconception from the Chemistry education literature. (Galley 2004) Answers B and D are considered correct and answer C is considered representative of a serious misconception. Our students did a bit better than the chemistry class reported by Galley – but not much. In our class 79% chose the “misconception” C compared to 87% in the chemistry class; and 47% chose the “correct” answer B compared to 31% in the chemistry class.

A bigger object will have less of a response (acceleration) to the same force. 6. → --The little arrows on top of the acceleration and net force remind us that Newton’s second law is a vector equation. This means that each perpendicular direction has its own Newton’s law -- x, y, and z. Further, that it is the net force in the x direction that affects the motion in the x direction, the net force in the y direction that affects the motion in the y direction, etc. That’s a lot to pack into one little equation with what looks like 3 symbols (that turn out to be 6).

I was thinking that [in the] larger context of this reaction [it] releases energy. This is a very interesting explanation. Gregor explicitly describes his loss of points on the quiz as a framing error. When looked at it from a physics framing, one assumes that one should isolate the molecule and talk about it as if it were in a vacuum. When considered however from a biological framing, the molecule is always in water so the availability of water molecules – and the second part of the reaction – can be taken for granted.

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