Yeast is a fungus and needs a supply of energy for its living and growth. Sugar supplies this energy. (Your body also gets much of its energy from sugar and other carbohydrates.). Yeast can use oxygen to release the energy from sugar (like you can) in the process called respiration. So, the more sugar there is, the more active the yeast will be and the faster its growth (up to a certain point-even yeast cannot grow in very strong sugar-such as honey).
Molecules are held together by either covalent bonding or ionic bonding. Several types of non-metal elements exist only as molecules in the environment. For example, hydrogen only exists as hydrogen molecule. A molecule of a compound is made out of two or more elements.
A temporary dipole on one molecule (formed by the random motion of. electrons in the molecule) induces a temporary dipole on neighboring molecules. These temporary dipoles experience attraction for each other. London forces exist between all types of molecules. The strength of. London forces depends on the molar mass of the molecule (higher MM â more. electrons â more polarizable â stronger London forces) and, to a lesser extent, on surface area (greater surface areaâ stronger London forces).