Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 19 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) warm water (d) a piece of string
2. 2.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) a balloon
4. 4.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) empty (d) saturated
5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
6. 6.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
7. 7.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
8. 8.True or false: small pebbles does not dissolve in water. (a) True (b) False
9. 9.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
10. 10.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
13. 13.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) cooking an egg (d) melting ice
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) cooking an egg (d) folding paper
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
17. 17.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
18. 18.⚖️ 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 change it (b) we keep it the same (c) we measure it
19. 19.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a spoon (c) a balloon (d) a magnet
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) turmeric powder (d) warm water
21. 21.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🔮 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
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) salt (d) a battery cell
25. 25.True or false: cooking oil dissolves in water. (a) False (b) True
26. 26.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting butter (c) milk turning to curd (d) cooking an egg
27. 27.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.⚖️ 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
29. 29.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
30. 30.True or false: sugar does not dissolve in water. (a) False (b) True
31. 31.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
32. 32.True or false: warm water is needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) a piece of string (d) warm water
34. 34.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) freezing water (d) rusting iron
35. 35.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) sand (d) baking soda
36. 36.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
37. 37.True or false: sand dissolves in water. (a) True (b) False
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) yeast
39. 39.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) turmeric powder (d) warm water

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