Readings Flashcards
What is the difference between homogeneous and heterogeneous matter?
In foods that are homogeneous, individual components cannot be visually discerned. Solutions, such as some beverages, are examples of homogeneous matter’, in which one substance is dissolved into another. In heterogeneous matter, individual components can be visually discerned and may be distributed unevenly.
Solubility?
The maximum amount of solute that dissolves in a specified volume of solvent at a specified temperature.
Reactions?
A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. (Start with reactants, finish with products.)
Reaction rate?
Reaction rate is the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
Catalysts?
A catalyst is a substance that speeds up a chemical reaction, but is not consumed by the reaction; hence a catalyst can be recovered chemically unchanged at the end of the reaction it has been used to speed up, or catalyze.
Stoichiometry?
The relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
