How could you distinguish an element from a compound?

1 Answer

If it is on the periodic table, it is an element.


An element is a pure substance and is found on the periodic table. If you have more than one element chemically bonded, it is a compound.

Hydrogen, oxygen, and iron are all elements.

#H_"2"O# is a compound because it is hydrogen and oxygen chemically bonded. You won't find a symbol of #H_"2"O# on the periodic table.

Similarly, #Fe_"2"O_"3"# is a chemical compound made of elements.