Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 170 · 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.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sugar (d) small pebbles
3. 3.🧈 Can this change be undone: folding paper? (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: days to see crystals is what we measure. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
10. 10.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
11. 11.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a piece of string (d) a balloon
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) salt (d) a mirror
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) sugar (d) glucose powder
15. 15.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
16. 16.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
17. 17.🧂 Which of these dissolves in water? (a) glucose powder (b) cooking oil (c) sawdust (d) chalk powder
18. 18.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) small pebbles (d) chalk powder
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.⚖️ 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) True (b) False
22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
23. 23.⚖️ 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) sunny or shady place (b) the amount of water (c) the amount of salt (d) days to see crystals
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
25. 25.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) turmeric powder
28. 28.⚖️ 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
29. 29.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) melting ice (d) baking a cake
30. 30.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) a battery cell (d) a mirror
31. 31.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
32. 32.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) dissolving salt (c) freezing water (d) folding paper
33. 33.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) rusting iron (d) freezing water
34. 34.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) table salt (d) sugar
35. 35.True or false: salt is needed for growing salt crystals. (a) True (b) False
36. 36.⚖️ 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
37. 37.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a spoon (d) a piece of string
39. 39.⚖️ 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) sunny or shady place (c) the amount of salt (d) days to see crystals
40. 40.True or false: melting ice is a change that cannot be undone. (a) False (b) True

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