Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 261 · 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.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
2. 2.⚖️ 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
3. 3.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) glucose powder (d) table salt
4. 4.⚖️ 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 same dish (c) days to see crystals (d) the kind of salt
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
6. 6.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting ice (c) cooking an egg (d) browning lemon ink
7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
8. 8.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) glucose powder (d) sand
9. 9.⚖️ 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
10. 10.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
11. 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
12. 12.True or false: warm water is needed for growing salt crystals. (a) False (b) True
13. 13.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
14. 14.True or false: sand does not dissolve in water. (a) True (b) False
15. 15.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) saturated (d) frozen
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
18. 18.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) small pebbles (d) chalk powder
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a magnet (d) warm water
20. 20.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) milk turning to curd (d) rusting iron
21. 21.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) sand (d) baking soda
22. 22.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
25. 25.🛟 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
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) folding paper (d) baking a cake
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) a piece of string (d) a shallow dish
30. 30.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) sawdust (d) table salt
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
32. 32.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
33. 33.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.⚖️ 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
35. 35.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
36. 36.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
37. 37.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a spoon (d) warm water
39. 39.⚖️ 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
40. 40.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting ice (c) melting butter (d) freezing water

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