Stability can be achieved by adding, losing, or sharing electrons. Double bond means two pair of electrons are shared. C. Sharing electrons leads to the formation of covalent bonds. 1 calorie is the heat needed to raise the temp. Bonding patterns of Biologically Important Elements.
Structure is crucial for understanding biology.
Two or more atoms are linked by a chemical bond is a molecule. Insulin is a complicated molecule called a protein. We will later consider simplier ways to consider the complicated molecules of life. Ions- atoms can obtain a stable number of electrons by giving up or gaining electrons. The ion pair is held together by strong electrostatic attractions.