Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 278 · 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: sugar dissolves in water. (a) False (b) True
2. 2.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
3. 3.True or false: folding paper is a change that can be undone. (a) False (b) True
4. 4.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sawdust (d) baking soda
5. 5.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) sugar (d) food colour
6. 6.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
8. 8.🔍 Which is the odd one out? (a) food colour (b) table salt (c) small pebbles (d) glucose powder
9. 9.⚖️ 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
10. 10.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) food colour (b) sand (c) sugar (d) table salt
12. 12.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) table salt (d) sawdust
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 change it (c) we keep it the same
14. 14.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) dissolving salt (d) milk turning to curd
15. 15.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) rusting iron (d) dissolving salt
16. 16.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.True or false: melting butter is a change that cannot be undone. (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: days to see crystals is kept the same. (a) False (b) True
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
22. 22.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) a shallow dish (d) a balloon
23. 23.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
24. 24.⚖️ 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
25. 25.True or false: melting ice is a change that cannot be undone. (a) True (b) False
26. 26.True or false: rusting iron is a change that can be undone. (a) True (b) False
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a mirror (d) warm water
28. 28.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
29. 29.🧺 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
30. 30.True or false: cooking oil dissolves in water. (a) False (b) True
31. 31.⚖️ 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) False (b) True
32. 32.⚖️ 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) False (b) True
33. 33.🔍 Which is the odd one out? (a) sugar (b) table salt (c) baking soda (d) cooking oil
34. 34.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
35. 35.🧂 Which of these does not dissolve in water? (a) table salt (b) chalk powder (c) food colour (d) glucose powder
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a battery cell (c) yeast (d) a magnet
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a balloon (d) a piece of string
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.⚖️ 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) sunny or shady place (c) the amount of salt

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