I already knew that enchanted books can have the enchantment as well, but if you break an ice using a Silk touch book, the ice drop but the block still turns into water. 
I tried the same thing but instead of a legit Silk touch book, I tried with the silk touch book I got from /give command, the ice don't drop, but there is no water coming out. (Also, using the /give command to get enchanted books and it will not be able to enchant items on an Anvil)
Putting Silk touch enchantment onto any other item and they will still works perfectly.