What happens when elements are chemically combined?

Sagot :

Atoms of different elements can join together in chemical reactions to form compounds. For example hydrogen and oxygen are elements. They react together to form water, a compound

Hope that helps you!

Depends on the elements... Certain type of chemicals combined can be very dangerous and have a big impact like blowing up, or fizzing.... But typically they form a new element. Some elements counteract other elements.