Question

ionic compounds covalent compounds
bonding ionic bonds covalent bonds
description bond between____ and__. the__ attracts the electron, we can say the__ donates the electron. bond between two__ with similar electronegativities. atoms____ electrons in their valence shell.
electronegativity large electronegativity difference between the participants (generally > 1.7) zero to small electronegativity difference within a range (0 to 1.7)
representative unit formula unit, forms crystalline lattices forms discrete molecules.
what the formula represents the ratio of cations to anions the type and number of atoms in the molecule
melting and boiling point high low
state at room temperature solid generally liquid or gas, sometimes solid
water solubility usually high variable
electrical conductivity good when molten or in solution poor
other properties hard, brittle crystals when solid, tend to be soft, tend to be more flammable

Explanation:

Ionic compounds form when there is a transfer of electrons from a metal (which has low ionization energy and donates electrons) to a non - metal (which has high electron - affinity and attracts electrons). Covalent compounds form when non - metals (since they have similar electronegativities) share electrons to achieve a stable electron configuration in their valence shells.

Answer:

For Ionic Compounds (Description): metal, non - metal, non - metal, metal.
For Covalent Compounds (Description): non - metals, share.