mercedes's chem cards

A bond that results from the sharing of
electrons between atoms.

The unit of matter held together by
covalent bonds.

what creates a net attractive force that binds atoms together?

Different samples of a pure chemical
compound always contain the same proportion of elements by mass.

Elements can combine in different ways to
form different compounds, with mass ratios that are small whole-number
multiples of each other.

•combination
of at least two
nonmetal atoms in a specific arrangement held
together by chemical
bonds

shows
exact number of atoms of each element in a molecule

Atoms will gain, lose, or share electrons to
acquire eight valence electrons

The ability of an atom in a molecule to
attract the shared electrons in a covalent bond. increases from left to right, and down a column.

have unsymmetrical electron distribution in which the bonding electrons are attracted more strongly by one atom then the other.

A representation of an atom’s valence electrons by using dots and indicates by the placement of dots how the valence electrons are distributed in the molecule.

A quantum mechanical model which shows how electron pairs are shared in a covalent bond.