Answer:
I would say metals
Ok so let's start off by saying that chemicals take a big part in our life, right? Nevertheless, many of these chemicals may, especially if not appropriately used, endanger our health and poison our environment. Some reactions may result in death and injury to people, damage to physical property, and severe effects on the environment.
Next, let's talk about metals.
Metals are often good conductors of electricity and heat, shiny and pliable. The metals we use day-to-day are converted from metallic ores to their final form. Toxic metals sometimes imitate the action of an essential element in the body, interfering with the metabolic process resulting in illness.
Last, acids.
Acids can react violently with water and are harmful in the presence of moisture in the mouth or eyes or in proximity with other aqueous solutions
I hope this helps :)
