Chemical Change Examples in Chemistry

Chemical changes involve chemical reactions and the creation of new products. Typically, a chemical change is irreversible. In contrast, physical changes do not form new products and are reversible. Some Common Chemical Changes The rusting of ironCombustion (burning) of woodThe metabolism of food in the bodyMixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)Cooking an eggDigesting sugar with the amylase in salivaMixing baking soda and vinegar to produce carbon dioxide gasBaking a cakeElectroplating a metalUsing a chemical batteryThe explosion of fireworksRotting bananasGrilling a hamburgerMilk going sour Less-familiar chemical reactions are also examples of chemical changes. While its not always easy to tell a chemical change has occurred (as opposed to a physical change), there are some telltale signs. Chemical changes may cause a substance to change color, change temperature, produce bubbles, or (in liquids) produce a precipitate. Chemical changes can also be considered to be any phenomenon that allows a scientist to measure  chemical properties.