Properties and Changes of Properties in Matter, Grades 5-8 Food has characteristic properties which provide taste, aroma, color, and texture. Our senses are often unable to determine what is contained in a food item which is a mixture. Substances react chemically in characteristic ways with other substances to form new substances with different characteristic properties. Cream of tartar reacts with water to form an acidic solution, which tastes sour. Chemical Reactions, Grades 9-12 Chemical reactions occur all around us, for example in cooking.
Many reactions involve the transfer of hydrogen ions between reacting ions, molecules, or atoms.
The physical properties of compounds reflect the nature of the interactions among their molecules. Many of the components responsible for the flavor of apples are volatile, and evaporate when apples are baked. 1995-1997 Page maintained by Steve Gentle, Research Associate.