Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 251 · 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.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a balloon (d) a shallow dish
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a battery cell (d) a spoon
6. 6.True or false: melting butter is a change that cannot be undone. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) glucose powder (d) table salt
8. 8.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a balloon (d) warm water
10. 10.True or false: cooking oil dissolves in water. (a) False (b) True
11. 11.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
13. 13.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
14. 14.True or false: warm water is needed for growing salt crystals. (a) False (b) True
15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
16. 16.🧂 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) baking soda (d) sugar
17. 17.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) cooking oil (d) sugar
18. 18.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) table salt (b) sugar (c) cooking oil (d) glucose powder
20. 20.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) cooking oil (d) sand
21. 21.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧈 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
23. 23.🧂 Which of these dissolves in water? (a) cooking oil (b) sugar (c) sand (d) small pebbles
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a shallow dish (d) a magnet
25. 25.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
26. 26.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
27. 27.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) warm water (c) salt (d) a spoon
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) turmeric powder
31. 31.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
32. 32.🧂 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) chalk powder (d) sand
33. 33.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
34. 34.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
35. 35.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
37. 37.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
38. 38.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.⚖️ 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
40. 40.⚖️ 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

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