Â© Ted French. Definition: A function is a preset formula in Excel and Google Spreadsheets. Like formulas, functions begin with the equal sign (=) followed by the function's name and its arguments. The function name tells Excel what calculation to perform. The arguments are contained inside round brackets.
Best Answer: Look for molecular symmetries. Symmetrical molecules such as methane, carbon dioxide, carbon disulfide, and borane (BH3) are nonpolar. Asymmetric molecules such as water, ammonia, and acetone are polar.
Molecules like this, involving compounds of a single element, are called nonpolar because they do not really attract other kinds of molecules. Lipids or Fatty Acids Polarity plays a role in organic compounds called lipids, the fats that help deliver the body's energy.