Final answer:
Organic peroxides, oxidizers, and unstable reactives are examples of hazardous chemicals that can cause combustion, toxic emissions, and explosions. These substances include Reactive Oxygen Species (ROS) which, though vital for certain biological functions, can cause damage at high levels. The body uses antioxidants and enzymes to regulate these potentially damaging substances.
Step-by-step explanation:
Organic peroxides, oxidizers, and unstable reactives are all examples of hazardous chemicals. These materials are characterized by their potential to cause harmful reactions, such as combustion, detonation, or the release of toxic gases when they contact other substances or are exposed to certain conditions. Oxidizers, like potassium dichromate, contain oxygen which can make other materials combust. Unstable reactives may react with water or explode under normal conditions, as seen with certain batteries and explosives. Additionally, certain household chemicals, which can be highly reactive, pose dangers upon ingestion or skin contact, such as corrosive agents and strong oxidizing agents that can damage living tissues.
Reactive Oxygen Species (ROS) like peroxides and free radicals, naturally formed in cellular processes, are examples of chemicals that, while necessary for certain biological functions, can cause oxidative damage if their levels are not properly regulated. The body has mechanisms such as antioxidants and enzymes to control ROS levels. These substances are crucial in preventing the damage caused by ROS, which includes aging and the development of diseases. Toxic chemicals can also include persistent organic pollutants and heavy metals like lead and mercury, which can persist in the environment and biomagnify through the food chain.