Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 32 · 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.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) salt (c) a magnet (d) a mirror
2. 2.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
3. 3.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a mirror (d) salt
7. 7.True or false: sawdust does not dissolve in water. (a) False (b) True
8. 8.🧺 Do we need a magnet 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) a shallow dish (c) a battery cell (d) warm water
10. 10.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) turmeric powder (d) a shallow dish
12. 12.🔍 Which is the odd one out? (a) sand (b) sugar (c) small pebbles (d) sawdust
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) days to see crystals (c) sunny or shady place
15. 15.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
16. 16.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) baking soda (d) sand
17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) frozen (d) empty
18. 18.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) sand (b) sawdust (c) cooking oil (d) glucose powder
20. 20.True or false: sand does not dissolve in water. (a) False (b) True
21. 21.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
23. 23.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) food colour (d) sawdust
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a spoon (d) salt
26. 26.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) warm water (d) a balloon
28. 28.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
29. 29.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.⚖️ 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
31. 31.True or false: cooking oil does not dissolve in water. (a) False (b) True
32. 32.True or false: table salt does not dissolve in water. (a) False (b) True
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the kind of salt (c) the amount of water (d) days to see crystals
34. 34.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) folding paper (d) cooking an egg
35. 35.⚖️ 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) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt
36. 36.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
37. 37.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
38. 38.True or false: sand dissolves in water. (a) True (b) False
39. 39.True or false: melting ice is a change that cannot be undone. (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 “the kind of salt”? (a) we keep it the same (b) we measure it (c) we change it

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