Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 384 · 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.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) yeast
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 kept the same. (a) False (b) True
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
4. 4.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) glucose powder (d) cooking oil
6. 6.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
7. 7.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) milk turning to curd (c) dissolving salt (d) melting butter
9. 9.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
10. 10.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.⚖️ 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) days to see crystals (c) the amount of salt (d) sunny or shady place
12. 12.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) water evaporates (d) the dish melts
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a battery cell
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
17. 17.True or false: salt is not needed for growing salt crystals. (a) False (b) True
18. 18.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a spoon (d) a mirror
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a spoon (c) a shallow dish (d) salt
20. 20.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) glucose powder (d) food colour
21. 21.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a balloon (c) a shallow dish (d) a spoon
23. 23.⚖️ 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 amount of salt
24. 24.⚖️ 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) False (b) True
25. 25.True or false: cooking oil dissolves in water. (a) False (b) True
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) sand (d) table salt
29. 29.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
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 kept the same. (a) False (b) True
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a shallow dish (d) a balloon
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a magnet (d) salt
34. 34.⚖️ 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
35. 35.🔮 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
36. 36.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
37. 37.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
39. 39.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) melting ice (d) cooking an egg
40. 40.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) cooking oil (d) table salt

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