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.
Lipids are insoluble in water because they are nonpolar, and water is a polar molecule. Nonpolar substances are insoluble in polar substances, and polar substances are insoluble in nonpolar substances. Continue Reading. The effect of mixing polar and nonpolar liquids is similar to mixing magnetized marbles with regular ones.