HELP Identify two macroscopic characteristics of water that are a result of its molecular structure. Describe how each characteristic is related to the molecular structure of water.

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1. Water has a high boiling point considering its low molecular weight.  

This is because the O-H bonds are very polar and the H's are located at two corners of a tetrahedron giving water a high molecular polarity so that they tend to stick together.  

2. Water forms hydrogen bonds between molecules  

these bonds are rather flexible so that in liquid phase the molecules are relatively close together  

but as the hexagonal arrangement of ice is formed the bonds are licked in place and as a result the average distance between molecules actually increases  

with the result that ice is less dense than liquid water

Explanation: