Chemical industry - Wikipedia

The chemical industry comprises the companies that produce industrial chemicals.Central to the modern world economy, it converts raw materials (oil, natural gas, air, water, metals, and minerals) into more than 70,000 different products.The plastics industry contains some overlap, as most chemical companies produce plastic as well as other chemicals. ...…

Chemical hazard - Wikipedia

A chemical hazard is a type of occupational hazard caused by exposure to chemicals in the workplace. Exposure to chemicals in the workplace can cause acute or long-term detrimental health effects. There are many types of hazardous chemicals, including neurotoxins, immune agents, dermatologic agents, carcinogens, reproductive toxins, systemic toxins, asthmagens, pneumoconiotic agents, and ...…

Chemical cell - Simple English Wikipedia, the free ...

A chemical cell converts chemical energy into electrical energy.Most batteries are chemical cells. A chemical reaction takes place inside the battery and causes electric current to flow.. There are two main types of batteries - those that are rechargeable and those that are not.. A battery that is not rechargeable will give electricity until the chemicals in it are used up.…

Chemical substance - Simple English Wikipedia, the free ...

A chemical substance is any material with a known chemical composition. For example, water has the same properties and the same ratio of hydrogen to oxygen whether it came from a river or was made in a laboratory.Typical chemical substances found in the home include water, salt (sodium chloride) and bleach.Generally, substances exist as a solid, a liquid, or a gas, and may change between these ...…

How Many Types of Chemical Reactions Are There?

The four main types of chemical reactions are fairly clear-cut, however, there are different names for the reaction categories. It's a good idea to become familiar with the various names so that you can identify a reaction and communicate with people who may have learned it under a different name.…