Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 62 · 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.⚖️ 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 kind of salt (b) the same dish (c) days to see crystals (d) sunny or shady place
2. 2.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) cooking oil (d) sand
3. 3.⚖️ 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
4. 4.⚖️ 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 change it (c) we measure it
5. 5.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a piece of string (d) turmeric powder
6. 6.⚖️ 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
7. 7.True or false: melting butter is a change that cannot be undone. (a) True (b) False
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
9. 9.🧂 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) glucose powder (d) sugar
10. 10.True or false: cooking an egg is a change that can be undone. (a) True (b) False
11. 11.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) folding paper (d) milk turning to curd
12. 12.True or false: freezing water is a change that cannot be undone. (a) True (b) False
13. 13.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
14. 14.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) baking a cake (d) cooking an egg
15. 15.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
16. 16.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sand (d) baking soda
17. 17.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ 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) False (b) True
20. 20.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
21. 21.⚖️ 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
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) salt (d) warm water
24. 24.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
25. 25.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
26. 26.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
27. 27.⚖️ 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 amount of water (b) days to see crystals (c) sunny or shady place
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) warm water (d) salt
29. 29.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) glucose powder (d) sugar
33. 33.🧺 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 magnet
34. 34.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sugar (d) chalk powder
35. 35.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) turmeric powder (d) warm water
38. 38.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
40. 40.⚖️ 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 measure it (c) we keep it the same

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