Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 192 · 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.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
2. 2.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
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 keep it the same (c) we measure it
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
5. 5.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
6. 6.🧺 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
7. 7.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) a magnet (d) salt
8. 8.⚖️ 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
9. 9.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) yeast (d) turmeric powder
12. 12.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) rusting iron (c) melting butter (d) freezing water
14. 14.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) sand (d) small pebbles
15. 15.True or false: dissolving salt is a change that can be undone. (a) False (b) True
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
18. 18.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a spoon (d) yeast
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) a spoon (d) a piece of string
22. 22.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
23. 23.True or false: sugar dissolves in water. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) food colour (b) sand (c) table salt (d) sugar
25. 25.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) folding paper (c) melting ice (d) freezing water
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.True or false: small pebbles does not dissolve in water. (a) False (b) True
29. 29.🧂 Which of these does not dissolve in water? (a) glucose powder (b) cooking oil (c) table salt (d) sugar
30. 30.🧺 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) a spoon
31. 31.True or false: sawdust does not dissolve in water. (a) False (b) True
32. 32.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
33. 33.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) sand (d) table salt
34. 34.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) chalk powder (d) small pebbles
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) a shallow dish (d) warm water
36. 36.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) baking soda (d) chalk powder
37. 37.True or false: freezing water is a change that can be undone. (a) True (b) False
38. 38.⚖️ 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) the amount of salt (b) the amount of water (c) the kind of salt (d) sunny or shady place
39. 39.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) freezing water (c) baking a cake (d) milk turning to curd
40. 40.True or false: rusting iron is a change that cannot be undone. (a) False (b) True

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