Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 463 · 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 balloon is not needed for growing salt crystals. (a) True (b) False
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a shallow dish (d) a piece of string
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a shallow dish (d) turmeric powder
5. 5.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
6. 6.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) cooking oil
7. 7.⚖️ 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 change it (c) we measure it
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 keep it the same (b) we change it (c) we measure it
9. 9.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a spoon (c) a battery cell (d) a balloon
12. 12.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a piece of string (d) a balloon
15. 15.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) baking soda (d) small pebbles
16. 16.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.True or false: freezing water is a change that cannot be undone. (a) False (b) True
18. 18.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
20. 20.True or false: melting butter is a change that can be undone. (a) True (b) False
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) table salt (d) small pebbles
23. 23.True or false: yeast is needed for growing salt crystals. (a) True (b) False
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) warm water (d) a spoon
25. 25.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
27. 27.True or false: chalk powder dissolves in water. (a) True (b) False
28. 28.🧂 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) sugar (d) glucose powder
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) yeast (d) a shallow dish
30. 30.⚖️ 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
31. 31.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
32. 32.True or false: table salt does not dissolve in water. (a) True (b) False
33. 33.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
34. 34.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
35. 35.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
36. 36.True or false: baking soda dissolves in water. (a) False (b) True
37. 37.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
38. 38.🧈 Which of these is a change that can be undone? (a) melting butter (b) milk turning to curd (c) rusting iron (d) cooking an egg
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) yeast (c) a shallow dish (d) salt

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