Maslow's Hierarchy of Needs. Definition. Maslow's hierarchy of needs is a theory of motivation and personality developed by the psychologist Abraham H. Maslow (1908â1970). Maslow's hierarchy explains human behavior in terms of basic requirements for survival and growth.
When you use ice to cool the ingredients for ice cream, the energy is absorbed from the ingredients and from the outside environment (like your hands, if you are holding the baggie of ice!).
Here are some of the chemicals used to stabilize and emulsify the ice cream you eat: Propylene glycol (also used in antifreeze), glycerin, sodium carboxyl methylcellulose, monoglycerides, diglycerides, disodium phosphates, tetrasodium pyrophosphate, polysorbate 80, and dioctyl sodium sulfosuccinate.