Question

Water, a stable liquid, is formed when two flammable gases, hydrogen and oxygen, combine. What has happened?

O An atom has been created.
O A compound has been created,
O A mixture has been created,
An element has been created

Answer 1

A compound has been created

Step-by-step explanation:

Remember you cannot create an atom nor can you create an element so An atom has been created and An element has been created is incorrect. Also, a compound is something that is chemically bound and cannot be separated unless applied a chemical change, which is applicable to water. It cannot be a mixture since mixtures can be separated physically, which you can't do with water.