Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 559 · 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: a spoon is not needed for growing salt crystals. (a) False (b) True
2. 2.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) milk turning to curd (c) dissolving salt (d) melting ice
3. 3.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
4. 4.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a piece of string (d) a balloon
6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
8. 8.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
9. 9.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a magnet (d) a shallow dish
11. 11.🧂 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) sugar (d) glucose powder
12. 12.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
13. 13.🧂 Which of these dissolves in water? (a) food colour (b) cooking oil (c) sand (d) small pebbles
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a shallow dish (d) warm water
18. 18.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
19. 19.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
24. 24.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a battery cell (d) warm water
27. 27.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
28. 28.🧂 Which of these does not dissolve in water? (a) sugar (b) sand (c) food colour (d) glucose powder
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
31. 31.True or false: yeast is needed for growing salt crystals. (a) True (b) False
32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) folding paper (c) baking a cake (d) browning lemon ink
33. 33.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) sand
34. 34.True or false: sugar dissolves in water. (a) False (b) True
35. 35.True or false: baking soda does not dissolve in water. (a) False (b) True
36. 36.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) chalk powder (d) baking soda
38. 38.True or false: sand does not dissolve in water. (a) True (b) False
39. 39.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) dissolving salt (d) browning lemon ink
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) a mirror

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