The most informative chemical test of all is simple heating; just warming the sample up and seeing what happens. Some substances, such as naphthalene, melt cleanly to a clear liquid; others, such as ...

Chlorine is a halogen in group VII A of the periodic table with atomic number 17, an atomic weight of 35.45, and a density of 1.56 Mg/m 3. In the solid state it forms a tretragonal crystal with a ...

Wafer-thin sheets of gold shot briefly with lasers can be heated up to 14 times their melting point while remaining solid, far beyond the theoretical limit, raising the possibility that some solids ...