4. Show an animation to help explain why mass is conserved in melting, dissolving, and in a chemical change. Show the animation Conservation of Mass in Physical and Chemical Changes. Explain that ...

Katie: OK, it's says three hundred grams. Miss Roberts: OK, so we are looking at the conservation of mass. Now, mass is the measure of how much stuff or matter is in an object and it's measured in ...

Massachusetts has seen a 1 to 13-inch snow and rain deficit as drought conditions have worsened, state officials said.

When a fluid is in motion, it must move in such a way that mass is conserved. To see how mass conservation places restrictions on the velocity field, consider the steady flow of fluid through a duct ...

Some scientists argue we’re currently facing a sixth mass extinction, but others say it’s too early to make that call. Estimates for extinction rates today are often based on data from the ...