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.
  While ionic compounds and polar molecules dissolve the best in water, nonpolar molecules do not. Example of a such nonpolar substance: oil. Oil forms clumps or beads in â¦ water because the nonpolar molescules are shoved together.