In a covelant bond two atoms are held together by the attraction between the number of covalent bonds that an atom can form depends on the number in the atom.

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

Which metals are called noble metals

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.