Created by StemPy LabA coloured solution is diluted again and again. Each time, of it is mixed with of clear water. After four such steps, how many times weaker is the colour than at the start?
← All Quizzes
← Two small crystals of potassium permanganate turn a jug of water purple. A spoon of this purple water is stirred into a bucket of clear water, and the bucket turns light pink. What does this tell us?Riya fills a glass of water right to the brim. She sprinkles in a spoon of salt, very slowly, and stirs. The salt dissolves, and no water spills over. Where did the salt go? →
Discussion (0)
Log in to join the discussion.
Loading…