True or False? Covalent bonds form only between non-metal atoms.

In a covalent bond, each shared pair of electrons forms ..........</ bond. A double bond therefore involves ..........</ shared pairs of electrons.

What do atoms achieve by sharing electrons in a covalent bond?

True or False? The term "relative formula mass" applies to all compounds, including covalent molecules such as water.

In a nitrogen molecule (N2), the two atoms share ..........</ pairs of electrons, forming a ..........</ bond.

How many covalent bonds does a carbon atom form in methane (CH4), and why?

Why do simple molecular compounds have low melting and boiling points?

True or False? The low boiling point of methane (CH4) is due to its weak covalent bonds.

Simple molecular compounds cannot conduct electricity because they contain no ..........</ and have no ..........</ electrons.

True or False? As the size of molecules in a homologous series increases, the boiling point generally increases.

In simple molecular compounds, the ..........</ bonds within molecules are strong, but the ..........</ forces between molecules are weak.

Define intermolecular forces.