Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 379 · 40 questions

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

1. 1.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the amount of water (c) days to see crystals (d) sunny or shady place
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of salt (c) the kind of salt (d) the same dish
3. 3.🧂 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) food colour (d) sugar
4. 4.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) rusting iron (d) melting ice
6. 6.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) food colour (d) small pebbles
7. 7.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
8. 8.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) cooking oil (d) sawdust
9. 9.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a balloon (c) a battery cell (d) a magnet
10. 10.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
12. 12.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
13. 13.True or false: salt is not needed for growing salt crystals. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) food colour (d) sawdust
15. 15.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) a shallow dish (d) a spoon
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) salt (c) a piece of string (d) a spoon
18. 18.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
22. 22.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) salt (d) a mirror
24. 24.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) turmeric powder
28. 28.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) table salt (d) sawdust
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
30. 30.True or false: glucose powder does not dissolve in water. (a) True (b) False
31. 31.🧂 Which of these dissolves in water? (a) cooking oil (b) sugar (c) small pebbles (d) sawdust
32. 32.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) table salt (d) baking soda
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a piece of string (d) a spoon
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
35. 35.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
38. 38.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) yeast (d) a mirror
39. 39.True or false: sugar does not dissolve in water. (a) True (b) False
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a magnet (d) a piece of string

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