Complete the statement.
Chloroform is ().

 - a compound
 - an elementary substance
You can tell whether chloroform is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for chloroform is CHCl3. This formula contains three symbols: C for carbon, H for hydrogen, and Cl for chlorine. So, the formula tells you that chloroform is made of three chemical elements bonded together.
Substances made of two or more chemical elements bonded together are compounds. So, chloroform is a compound.