Page 11 - Herlihy: The Human Body in Health and Illness, 3rd Edition

CHEMICAL
BONDS

Ionic bond When electrons are donated to another atom or acquired
from another atom.

Involves sharing of the electrons by the outer shells of the
Covalent bond atoms.

The weak positive of a polar element as Hydrogen in a
Hydrogen bond
water molecule, is attracted to the weak negative charge of
the oxygen in a second water molecule

8 Define elements, Elements, is a combination of alike atoms. Is a substance
molecules that can neither be created nor destroyed by ordinary
and compounds; means. H, Na O
provide one Compounds, combination of various elements in a definite
example of each proportion by weight
H2O
Molecules, The smallest unit of a compound that still has
the properties of the compound (they can the same
elements or different elements.
(water is a compound and a molecule.)