Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 122 · 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.True or false: melting ice is a change that can be undone. (a) True (b) False
2. 2.🧂 Which of these does not dissolve in water? (a) chalk powder (b) sugar (c) baking soda (d) food colour
3. 3.True or false: dissolving salt is a change that can be undone. (a) False (b) True
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) salt (d) a piece of string
5. 5.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) baking soda (d) sawdust
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
7. 7.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a magnet (d) a spoon
8. 8.⚖️ 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 measure it (b) we keep it the same (c) we change it
9. 9.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) sand
10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
11. 11.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) cooking oil (d) sand
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) warm water (d) a battery cell
13. 13.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a piece of string (d) a battery cell
14. 14.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
15. 15.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sand (d) sugar
17. 17.True or false: food colour dissolves in water. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) chalk powder (d) food colour
19. 19.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting ice (c) freezing water (d) dissolving salt
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) warm water (d) a spoon
21. 21.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
22. 22.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) milk turning to curd (d) folding paper
23. 23.True or false: sugar dissolves in water. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) chalk powder (d) sand
25. 25.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a piece of string (d) salt
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
30. 30.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) salt (d) warm water
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
33. 33.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
34. 34.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
35. 35.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
37. 37.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a battery cell (d) turmeric powder

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