Sagot :
Answer:
When a substance contains only one type of atom, it is called an element. ... An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.
Answer:
When a substance contains only one type of atom, it is called an element. ... An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.