. They think particles of any substance is minor, why (cooked flour and milk substances that can pass through a paper filter. But not through paper cellos defenseman) .
Students think. particles of the substance, which is also why ( Water, wheat flour, fresh milk and cooked ingredients can phankradat filters. But I can't pass the Beethoven cello paper ) .
students think that particles of any substance is secondary. Why (water and flour and cooked fresh milk substances that can pass through filter paper, but is not able to pass through the paper โลเฟน)