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 ...

Ion: A Compound Building Game allows players to create sets of ionic compounds and sets of noble gases by selecting cards from their hand. The catch? Once they select a card from their hand, they must ...