The group is trying to decide how to represent the charcoal particles in water and the sugar particles in water. Hayley begins by talking about charcoal particles still being in solid form.
The video group initially thinks that energy is released in both the sodium carbonate and the urea solutions, but they are unsure. They call over the instructor who helps them figure it out.
The video group discusses the first three parts of SQ #3. They talk about an example of a suspension, a solution, and how you decide whether something is one or the other.
The group talks about SQ #4 (c), why energy is released when the hand warmer is activated and why the metal wafer is necessary. They are confused about the role of the metal wafer and assume it provides some kind of energy, but they don't understand it.
UPC A9 Video Clip 1: Video group asks instructor question about how hand warmers work
UPC A9 Video Clip 1: Video group asks instructor question about how hand warmers work