Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 160 · 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 spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
2. 2.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) melting butter (d) milk turning to curd
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) warm water (c) a spoon (d) salt
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) warm water (d) a spoon
6. 6.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
7. 7.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) dissolving salt (c) freezing water (d) folding paper
8. 8.True or false: melting ice is a change that cannot be undone. (a) True (b) False
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a magnet (d) warm water
10. 10.⚖️ 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
11. 11.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a balloon (d) turmeric powder
13. 13.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
14. 14.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) sawdust (d) sand
15. 15.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
16. 16.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
17. 17.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
18. 18.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
19. 19.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) browning lemon ink (d) freezing water
20. 20.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a battery cell (d) salt
22. 22.⚖️ 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) the same dish (d) the amount of salt
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a balloon (d) a piece of string
24. 24.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
25. 25.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) freezing water (d) melting butter
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) turmeric powder (d) a spoon
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) folding paper (d) rusting iron
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) turmeric powder (d) a piece of string
30. 30.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sawdust (d) table salt
31. 31.🔮 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
32. 32.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a balloon (d) salt
34. 34.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) glucose powder (d) table salt
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) yeast (c) salt (d) a spoon
36. 36.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
37. 37.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
38. 38.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
39. 39.⚖️ 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
40. 40.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed

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