Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 992 · 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 does not dissolve in water? (a) sugar (b) sawdust (c) table salt (d) food colour
2. 2.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a mirror (d) warm water
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
5. 5.⚖️ 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) the amount of water (c) sunny or shady place (d) the kind of salt
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
7. 7.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) saturated (d) empty
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
12. 12.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
13. 13.⚖️ 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) False (b) True
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a spoon (c) salt (d) a piece of string
15. 15.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) table salt
17. 17.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
19. 19.⚖️ 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 keep it the same (c) we change it
20. 20.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
21. 21.True or false: salt is not needed for growing salt crystals. (a) False (b) True
22. 22.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) salt (d) turmeric powder
24. 24.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny stars (d) tiny spheres
25. 25.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) salt (c) a spoon (d) a shallow dish
27. 27.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) freezing water (d) milk turning to curd
28. 28.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
29. 29.True or false: folding paper is a change that cannot be undone. (a) True (b) False
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
31. 31.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) turmeric powder (d) yeast
32. 32.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) warm water (c) a spoon (d) a piece of string
35. 35.True or false: turmeric powder is not 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? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
37. 37.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
38. 38.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) glucose powder (d) chalk powder
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) turmeric powder
40. 40.🔍 Which is the odd one out? (a) sugar (b) table salt (c) baking soda (d) sand

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