Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 383 · 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.🌊 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
2. 2.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
3. 3.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
5. 5.True or false: freezing water is a change that cannot be undone. (a) True (b) False
6. 6.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) rusting iron (d) folding paper
7. 7.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) cooking an egg (d) melting ice
8. 8.⚖️ 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
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
11. 11.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
12. 12.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) chalk powder (d) glucose powder
13. 13.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
15. 15.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
18. 18.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
19. 19.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a balloon
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) turmeric powder (d) a mirror
26. 26.⚖️ 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
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.⚖️ 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
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.⚖️ 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
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 the one thing we change. (a) True (b) False
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
33. 33.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a mirror (c) a shallow dish (d) salt
35. 35.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.⚖️ 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
37. 37.True or false: melting butter is a change that can be undone. (a) False (b) True
38. 38.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) yeast (d) a shallow dish
40. 40.⚖️ 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) sunny or shady place (d) the same dish

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