Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 522 · 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: warm water is not needed for growing salt crystals. (a) False (b) True
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a shallow dish (d) yeast
3. 3.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
4. 4.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
5. 5.True or false: glucose powder does not dissolve in water. (a) True (b) False
6. 6.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
7. 7.True or false: melting ice is a change that can be undone. (a) False (b) True
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) saturated (d) frozen
9. 9.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) milk turning to curd (d) melting ice
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a spoon (d) turmeric powder
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 same dish (b) sunny or shady place (c) days to see crystals (d) the kind of salt
12. 12.⚖️ 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
13. 13.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) salt (c) a spoon (d) warm water
15. 15.⚖️ 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
16. 16.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) folding paper (c) melting ice (d) freezing water
17. 17.True or false: melting butter is a change that cannot be undone. (a) False (b) True
18. 18.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) warm water (c) yeast (d) a balloon
19. 19.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
20. 20.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) browning lemon ink (d) freezing water
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 the one thing we change. (a) False (b) True
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) salt (d) a mirror
23. 23.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) sugar (d) chalk powder
24. 24.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) a magnet
26. 26.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
27. 27.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
28. 28.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a piece of string (d) yeast
30. 30.True or false: cooking an egg is a change that can be undone. (a) True (b) False
31. 31.⚖️ 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 measure it (c) we change it
32. 32.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) cooking an egg (d) baking a cake
33. 33.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) melting butter (d) folding paper
34. 34.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) food colour (d) sugar
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a magnet (c) a piece of string (d) salt
37. 37.True or false: freezing water is a change that cannot be undone. (a) False (b) True
38. 38.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) freezing water (d) baking a cake
39. 39.True or false: melting butter is a change that can be undone. (a) False (b) True
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) a battery cell

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