How can you will decide that given chemical compound is a slat or not?

Salt

The high school and college students often confuse that the given chemical compound is a salt or not. Here is a trick to solve this problem. If the 1^st element is a metal and 2^nd element is non-metal in a chemical compound then that compound will be a salt. For example sodium chloride (NaCl), In this case 1^st element is a metal and 2^nd  is a non-metal so it is a salt