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A bond that results from the sharing of
electrons between atoms.
The unit of matter held together by
what creates a net attractive force that binds atoms together?
the nucleus-electron attractions are greater than the nucleus-nucleus and electron- electron repulsions.
Different samples of a pure chemical
compound always contain the same proportion of elements by mass.
Law of Definite Proportions
Elements can combine in different ways to
form different compounds, with mass ratios that are small whole-number
multiples of each other.
Law of Multiple Proportions
of at least two
nonmetal atoms in a specific arrangement held
together by chemical
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.
polar covalent bonds
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.
Electron-Dot Structures (Lewis Structures)
A quantum mechanical model which shows how electron pairs are shared in a covalent bond.
Valence Bond Theory