Countable and uncountable nouns in English are on many occasions sort of confusing and sometimes beginners need some picture activities to help them memorize some of the words in English that are uncountable. It may be a bit of a drag, but as a matter of fact, if you don´t know them you will have some problems when you have to use determiners like `much and many`. Here´s a quick quiz to help refresh some of the rules.
In case you need to revise, here is a quiz with countable and uncountable nouns.