Chem Bonds

Ionic Bond

Transfer of electrons, if the formula starts with a metal than it is this

high melting points

solid at room temp

conducts electricity when melted or dissolved

Covalent Bond

Share of electrons, between nonmetals only

unequal sharing unless the atoms are all the same (diff EN)

low melting and boiling points

solid/liquid/gas

nonconductors in all states

Polar Covalent Bond

A covalent bond in which electrons are not shared equally, one end of bond more negative

Ionic

2.0-4.0

Polar Covalent

0.4-2.0

Asymmetrical outter atoms or lone pairs on the central atom

Non-polar Covalent

0.0-0.4

Symmetrical outter atoms and no lone pairs on the central atom

crystals

makes up ionic compound

formula unit

the lowest whole-number ratio of ions in an ionic compound

empirical formula

chemical formula for ionic compounds and is arranged in the smallest whole number ratio

Electrostatic Forces

attraction of opposite ions/charges

metallic bond

a bond formed by the attraction between positively charged metal ions and the electron sea around them

high melting points, strong bonds

sea of electrons

gives metals ductility, malleability, luster, and makes them good conductors of heat/electricity

molecular formula

represents makeup of one molecule (C6H12O6