<span>rusting of ironcombustion (burning) of woodmetabolism of food in the body<span>mixing an acid and a base, such as hydrochloric acid (HCl) andsodium hydroxide (NaOH)</span>cooking an eggdigesting sugar with the amylase in saliva<span>mixing baking soda and vinegar to produce carbon dioxide gas</span>baking a cakeelectroplating a metal<span>using <span>a </span>chemical battery</span>explosion of fireworksrotting bananasgrilling a hamburger<span>milk going sour</span></span>
