Perfluoroalkyl and polyfluoroalkyl substances (PFAS), a diverse group of synthetic chemicals, are commonly used in numerous ...

Two-dimensional materials are substances with a thickness of a few nanometres or less. Electrons in these materials are free to move in the two-dimensional plane, but their restricted motion in ...

To compare the density of two substances like clay and water, you can compare the weight of the same ... An object floats when it displaces a volume of water that has a mass equal to the mass of the ...

The different atoms and molecules of a substance give it its characteristic solubility. In earlier grades, students observed and tested objects and materials, and saw that the items could be grouped ...

In order to design a 21st-century, impact-resistant substance, materials scientist Mehmet Sarikaya of the University of Washington in Seattle finds inspiration in a 500-million-year-old feat of ...