Chemical Reactivity of MaterialsRefers to the ability of substances to react with one another to form a new substance.Products from Chemical ReactionsSoap – made from fats and alkali (saponification)Plastic – from the polymerization of petrochemicalsBaking soda and vinegar reaction – produces carbon dioxide (used for inflating or cleaning)Rust – formed from iron + oxygen + waterAlcohol – from the fermentation of sugarSugar in candy – formed through caramelization