After a round of partner-share, we agreed we've gathered a lot of evidence to change our consensus models. We could eliminate that air was inside the bath bombs, and that we knew the bath bombs started as a mixture. The two key ingredients to the bath bomb reaction were citric acid and baking soda, and through various tests on the gas(es) produced, we could narrow it down to three because of their properties! Check out our new consensus models!
All this discussion got us really confused, honestly. We agreed on a lot, but we also didn't understand how you could make a totally new particle if it wasn't there before. We left our discussion thinking about how this could happen alongside any lingering questions. Check out this snapshot of 6th graders' thinking!
Next steps: Investigate how new particles can possible come from old particles!