Chemical Context of Life Part 2

Question 1

chemical bonds

Answer 1

as interactions between the valence electrons of different atoms. Atoms are held together by chemical bonds to form molecules.

Question 2

covalent bond

Answer 2

occurs when valence electrons are shared by 2 atoms

Question 3

Nonpolar Covalent Bonds

Answer 3

occur when the electrons being shared are shared equally between the 2 atoms. O=O

Question 4

Polar Covalent Bonds

Answer 4

one atom had greater electronegativity than the other, resulting in an unequal share of electrons. This results in in the region of the oxygen atoms being slightly negative, whereas the regions around hydrogen are slightly positive.

Question 5

Ionic Bonds

Answer 5

are ones which 2 atoms attract valence electrons so unequally that the more electronegative atom steals the l electron away from the less electronegative atom

opposites attract

Question 6

hydrogen bond

Answer 6

are relatively weak bonds that form between the partial positively charged hydrogen atom of one molecule and the strongly electronegative oxygen or nitrogen of another molecule

play a major role in the three-dimensional shape of proteins and nucleic acids

Question 7

Van der Waals interactions

Answer 7

are very weak, transient connections that are the result of the asymmetrical distribution of electrons within a molecule

contribute to the 3-dimensional shape of molecules