High schoolers participate in a qualitative discussion of the distinction between weight and mass, followed by a description of astronaut mass measurements in a zero-g environment.
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New Review Chemistry: Average Atomic Mass (AMU, Daltons, etc.)
Scientists created a new measurement, the atomic mass unit, which is defined as carbon 12 = 12amu. So why isn't carbon listed as having exactly 12 amu on the periodic table? An installment from the Socratica chemistry playlist answers...
7 mins 9th - 12th Science CCSS: Adaptable
How Many Mass Extinctions Have There Been?
Everyone knows about the extinction of the dinosaurs, but what other mass extinctions have happened? The video explains how scientists define mass extinctions. It offers insight into the debate about the number of mass extinctions as well.
3 mins 6th - 12th Science CCSS: Adaptable
The Law of Conservation of Mass
This short video simply explains the Conservation of Mass with graphics that show the atoms being conserved in pictures of balanced equations. The connection between mass and energy is explained and Einstein's energy equation is mentioned.
5 mins 7th - 12th Science CCSS: Adaptable
New Review Mass Changes in Chemical Reactions—Microscale Chemistry
What better way is there to introduce conservation of mass than a few simple experiments? Young chemists conduct two chemical reactions, take the masses of reactants and products, then compare their results to determine differences in mass.
6th - 10th Science CCSS: Adaptable
Law of Conservation of Mass
New things are created all the time while others disappear, does the Law of Conservation of Mass mean your drone might be made out of dinosaurs? The 16th video in a series of 29 begins with a timeline of scientific discoveries related to...
4 mins 9th - 12th Science CCSS: Adaptable