Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 826 · 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.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny stars (d) tiny spheres
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) salt (b) a magnet (c) a spoon (d) warm water
4. 4.True or false: salt is not needed for growing salt crystals. (a) True (b) False
5. 5.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
6. 6.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
7. 7.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals (d) the same dish
8. 8.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: small pebbles does not dissolve in water. (a) True (b) False
10. 10.⚖️ 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
11. 11.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
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 keep it the same (b) we change it (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 “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
16. 16.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a battery cell (d) a piece of string
18. 18.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
19. 19.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
20. 20.🔍 Which is the odd one out? (a) sand (b) table salt (c) glucose powder (d) baking soda
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
22. 22.True or false: cooking oil does not dissolve in water. (a) False (b) True
23. 23.⚖️ 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) False (b) True
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a shallow dish (d) a magnet
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a battery cell (d) salt
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a shallow dish (d) warm water
27. 27.⚖️ 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 water (b) the amount of salt (c) days to see crystals (d) sunny or shady place
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) cooking oil
30. 30.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
31. 31.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) cooking oil (d) sawdust
32. 32.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) warm water (c) a spoon (d) a shallow dish
34. 34.True or false: melting ice is a change that cannot be undone. (a) False (b) True
35. 35.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) cooking an egg (d) melting ice
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a battery cell (d) salt
37. 37.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a mirror (c) a magnet (d) a battery cell
38. 38.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) a shallow dish (d) yeast
39. 39.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
40. 40.True or false: food colour dissolves in water. (a) False (b) True

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