Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 465 · 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: a spoon is needed for growing salt crystals. (a) False (b) True
2. 2.⚖️ 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
3. 3.⚖️ 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) False (b) True
4. 4.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) milk turning to curd (d) folding paper
5. 5.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
6. 6.🧂 Which of these dissolves in water? (a) sugar (b) sand (c) chalk powder (d) small pebbles
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
8. 8.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
11. 11.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
15. 15.⚖️ 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) False (b) True
16. 16.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) salt (d) a mirror
17. 17.⚖️ 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 water (b) days to see crystals (c) the amount of salt (d) the kind of salt
18. 18.⚖️ 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) False (b) True
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
20. 20.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
21. 21.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) a battery cell
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
25. 25.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
26. 26.True or false: sand does not dissolve in water. (a) False (b) True
27. 27.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
29. 29.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) sand is ground up (d) fish make it
30. 30.⚖️ 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
31. 31.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
32. 32.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
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 kept the same. (a) False (b) True
35. 35.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) warm water (d) salt
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
38. 38.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed

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