Study Set Content:
The number of protons plus the number of neutrons
Mass number
Occurs when the outermost electrons are transferred or shared between atoms.
Chemical bonding
The gain or loss of electrons.
Ionic bonding
Sharing of electrons
Covalent bonding
types of covalent bond
Single and double convalent bond
An unequal, asymmetrical sharing of electrons.
Polar covalent bond
Molecules with asymmetrical charge.
Polar molecules
An equal sharing of electrons between atoms.
Nonpolar covalent bond
Molecules with symmetrical electrical charge.
Nonpolar molecules
A polar molecule has a positive “end” and a negative “end”. The positive end of one polar molecule can be weakly attracted to the negative end of another polar molecule.
Hydrogen bond
is not a chemical bond because electrons are not transferred or shared between the atoms of the different polar molecules.
Hydrogen bond
Formed when two or more atoms chemically combine to form a structure that behaves as an independent unit.
Molecules
A substance resulting from the chemical combination of two or more different types of atoms.
Compound
When ionic compounds dissolve in water, their ions dissociate from each other
Dissociation
. These dissociated ions are sometimes called what because they can attract an electrical current
Electrolytes
Positively charged ions are attracted to what ends of the water molecules
Negative ends
Negatively charged ions are attracted to the what ends of the water molecules
Positive ends
Occurs when there is a formation or breaking of chemical bonds between atoms, ions, molecules, or compounds.
Chemical reaction
substances that enter into the reaction
Reactants
substances that result from the reaction
Products
