Complete the statement.
Silane is ().

 - an elementary substance
 - a compound
You can tell whether silane 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 silane is SiH4. This formula contains two symbols: Si for silicon and H for hydrogen. So, the formula tells you that silane is made of two chemical elements bonded together.
Substances made of two or more chemical elements bonded together are compounds. So, silane is a compound.