Separating mixtures The 14 questions of lesson 8 «Separating mixtures» of the chemistry course of Mova's primary school with their options, 75 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: the lesson at school .
t1 Your friend says: "A magnet will pull all the cans out of the recycling." Is that right? wrong ✗ t2 What would happen if you tried to filter salt out of salty water with a coffee filter? wrong ✗ t3 "why are salt pans in hot sunny places, not in rainy old Wales" Best answer? wrong ✗ t4 A detective cartoon says "every black pen has the same ink, so we can't tell which wrote the note." What's wrong? right ✓ t5 A ship has no fresh water but plenty of seawater. What could they do? right ✓ t6 "mud in this jar's taking ages to sink, can I speed it up" Which of these would actually help? wrong ✗ t7 Your sister wants to sort a big jar of mixed buttons fast. What is a good idea? wrong ✗ t8 Why does the salad spinner have holes in the inner basket but not the outer bowl? wrong ✗ t9 Why don't the salt bits rise with the steam from salty water? right ✓ t10 "colander, sieve, tea bag, coffee filter, what's the same about 'em" Best answer? right ✓ e1 Which of the following statements most accurately characterises the recovery of salt from a solution of salt in water? right ✓ · exam e2 Identify the method most appropriate to the separation of steel paper clips from sand. right ✓ · exam e3 Select the response that is consistent with the established facts concerning water that has been filtered through paper. wrong ✗ · exam e4 It is given that the steam from boiling salt water is condensed upon a cold surface. Ascertain the nature of the liquid obtained. right ✓ · exam ← previous
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