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UPC L4 Video Clip 5: Group 1 discusses CQ 4-3
Group 1 has an interesting discussion about CQ 4-3. They are wondering about mass and try to use the freezing or melting of ice to help them think about it. They support choice D (all four quantities will change if the liquid is heated or cooled).
UPC L4 Video Clip 6: Group 2 discusses CQ 4-3
Group 2 discusses CQ 4-3. They are unsure whether the mass will change or not when the liquid is heated or cooled. They discuss freezing water to ice as an example. They know the volume changes but are unsure about whether the mass changes. Most students finally decide on choice C (mass does not change).
UPC L4 Video Clip 8: Group 1 discusses whether mass changes
Group 1 discusses whether mass stays the same or changes when the thermometer is put in very cold water and the volume decreases (Making Sense question at top of p 32). This also leads them to consider the difference between mass and weight.
UPC L4 Video Clip 11: Class discusses first two Table rows in SQ #1
Student from class goes over the first two rows in the table for Summarizing Question #1. She claims that gas particles move faster than liquid particles. There is further class discussion about that issue. There is no resolution for the moment. A later lesson will provide better evidence to address the issue.
UPC L4 Video Clip 12: Class discusses last three Table rows in SQ #1
Student from class goes over the last three rows in the table for Summarizing Question #1. Another student in class disagrees and says that there is no attraction between liquid particles: they just collide with each other and bounce off. Three other students further support the claim that there is attraction between liquid particles.
UPC L4 Video Clip 1: Group 1 discusses questions about liquid particles