Yeast is added to a beer fermentation unit, where the yeast grows while fermenting the sugars into ethanol. Assuming yeast is your component and the fermentation unit is your system, which terms in the general balance can be maintained and which can be eliminated? Justify your answer briefly.

What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.