Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 600 · 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: sugar dissolves in water. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) table salt (b) sand (c) cooking oil (d) sawdust
3. 3.⚖️ 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
4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) it turns to oil (d) salt crystals form
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) warm water (d) a balloon
6. 6.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) cooking oil (d) sawdust
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
8. 8.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) table salt (d) chalk powder
10. 10.True or false: cooking an egg is a change that can be undone. (a) True (b) False
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of salt
12. 12.⚖️ 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) False (b) True
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) no crystals (d) smaller crystals
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) turmeric powder (c) a piece of string (d) a spoon
15. 15.⚖️ 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 water (b) days to see crystals (c) sunny or shady place
16. 16.True or false: sand dissolves in water. (a) False (b) True
17. 17.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
18. 18.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a balloon (d) warm water
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) a shallow dish (d) warm water
21. 21.True or false: glucose powder does not dissolve in water. (a) True (b) False
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a magnet (c) turmeric powder (d) a mirror
24. 24.True or false: yeast is needed for growing salt crystals. (a) False (b) True
25. 25.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) warm water (d) a piece of string
28. 28.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
29. 29.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) food colour (d) table salt
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a magnet (d) a shallow dish
31. 31.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🔍 Which is the odd one out? (a) sand (b) sawdust (c) sugar (d) cooking oil
33. 33.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
34. 34.True or false: table salt does not dissolve in water. (a) False (b) True
35. 35.⚖️ 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 measure it (b) we keep it the same (c) we change it
36. 36.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
37. 37.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
38. 38.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) food colour (d) cooking oil

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