Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 52 · 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 is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) cooking an egg (d) dissolving salt
2. 2.True or false: sugar dissolves in water. (a) False (b) True
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) turmeric powder
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) salt (c) yeast (d) a battery cell
5. 5.True or false: yeast is needed for growing salt crystals. (a) True (b) False
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.⚖️ 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
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a spoon (c) a shallow dish (d) warm water
10. 10.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
12. 12.⚖️ 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
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the same dish (c) sunny or shady place (d) days to see crystals
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a magnet (d) a shallow dish
16. 16.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to cool the water (d) to change its colour
17. 17.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
18. 18.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
19. 19.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) salt crystals form (d) it turns to butter
20. 20.⚖️ 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) False (b) True
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a shallow dish (d) warm water
22. 22.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) fish make it (d) sand is ground up
23. 23.⚖️ 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) the amount of salt (c) sunny or shady place
24. 24.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a spoon (d) turmeric powder
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
26. 26.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
27. 27.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
30. 30.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) folding paper (d) dissolving salt
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a spoon (d) a piece of string
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) warm water (d) salt
33. 33.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
34. 34.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) yeast (c) warm water (d) a shallow dish
37. 37.🔍 Which is the odd one out? (a) sand (b) sawdust (c) cooking oil (d) table salt
38. 38.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) sand (d) sawdust

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