Answer:
A chemist searches for new knowledge about chemicals and use it to improve the way we live. He or she may develop products such as synthetic fibers, drugs and cosmetics. Chemists create processes, including all refining and petrochemical processing, that reduce energy use and pollution.
Answer:
Noble gases
Explanation:
nobles gases have their outer energy level complete
They contain Carbon, Nitrogen, Hydrogen, Oxygen, and Sulfur