The Law of Conservation of Mass

Can you disprove the law of conservation of mass? Pupils observe the teacher weigh each part of a reaction. Then, the teacher weighs the result of the reaction and everyone sees that the products do not equal the reactants. Then they...

Where does the mass for a growing tree come from? Scholars consider a few different hypotheses and guess which is correct. They then analyze data from different experiments to understand which concepts science supports.

Open learners' eyes to the challenge of finding safe drinking water – something we often take for granted in our country. The PowerPoint presentation includes images, graphs, diagrams, and even a video to stimulate discussion on how we...

Assist your class with understanding collisions as they apply the Law of Conservation of Momentum. Pupils measure the momentum before and after manipulation of two objects so that one strikes another in an inelastic collision. The lesson...

Provide learners with the tools to further understand nuclear energy and isotopes. Young chemists investigate the components of an atom's nucleus, use symbols to represent various isotope forms, and use the percent abundance of an atom's...

Energy is conserved? Prove it! The narrator does just that in a short video depicting the mathematical proof of conservation of energy. Young physicists see how the kinetic and potential energy present in a system are related to one...

Try creating something out of nothing—it's not possible! Scholars watch an engaging video, the seventh in the Crash Course Engineering series, to learn about the Law of Conservation of Mass. The video also covers the accumulation,...

Normal background extinctions and mass extinction events are examined in this short video that suggests that environmental change, naturally occurring and change caused by humans, is the key factor in such events.

Explore the center of gravity with your science class as they create a deadfall trap with common materials. They research the concepts of energy conservation and gravitational force before dividing into small groups to create a model of...

Extremely short, this video is a computer animation of a double-pan balance with zinc and sulfur atoms on each side. The synthesis reaction between the two occurs, with the new zinc sulfide molecules. The balance is still balanced. This...