Say which of these words are countable which are uncountable (chalk, water, backpack, ruler, rubber,dress, brush, cheese, glue,dictionary,paper,pencil sharpener, felt-tip.)

Countable (исчисляемые)
ruler, rubber,dress, brush, dictionary, pencil sharpener, felt-tip, backpack
Uncountable (неисчисляемые)
chalk, water, cheese, glue, paper