Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions. Anions (halide, sulfate, and carbonate ions) can be identified using precipitate tests or ...

Helium, a noble gas, was long believed to be 'too aloof' to react with the other elements on the periodic table. Now, however, scientists have provided a theoretical explanation of how helium may be ...

Update regulation to spur research into drugs that the body absorbs more easily and that could reach market more quickly, urge Julia L. Shamshina and colleagues. A new realm of potential drugs is ...