Sodium becomes a positive ion and chlorine becomes a negative ion. The positive and negative ions attract each other and form the ionic compound sodium chloride. A sodium and chlorine atom are near ...

When these two charged particles come together they form an ionic bond because the positive magnesium ion is attracted to the negatively charged chlorine ion. Ionic compounds form what is known as ...

Repeat for all the solid ionic compounds available, cleaning the wire loop each time. When some metal ions are mixed with an alkali solution a coloured precipitate can form. A precipitate is an ...

Whole new classes of compounds can be created from small clusters of atoms acting like single atoms of another element, researchers demonstrate for the first time in work reported in this week's ...