Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 705 · 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 do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
2. 2.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
3. 3.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals
4. 4.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.⚖️ 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) the amount of salt (d) sunny or shady place
6. 6.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) melting ice (d) browning lemon ink
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a magnet (c) yeast (d) a battery cell
9. 9.⚖️ 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
10. 10.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) glucose powder (d) sugar
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) salt (d) yeast
13. 13.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) melting butter (d) browning lemon ink
14. 14.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) baking soda (d) table salt
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) yeast
16. 16.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) warm water (d) yeast
17. 17.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) salt (d) a piece of string
19. 19.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
20. 20.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) folding paper (d) milk turning to curd
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of salt
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.True or false: table salt dissolves in water. (a) False (b) True
24. 24.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
25. 25.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) chalk powder (d) sugar
26. 26.True or false: cooking oil dissolves in water. (a) True (b) False
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) warm water (c) a spoon (d) a piece of string
28. 28.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) sand (d) sugar
30. 30.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) rusting iron (d) freezing water
31. 31.True or false: freezing water is a change that cannot be undone. (a) False (b) True
32. 32.⚖️ 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) False (b) True
33. 33.True or false: table salt does not dissolve in water. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) sand (b) baking soda (c) food colour (d) glucose powder
35. 35.🧂 Which of these dissolves in water? (a) sawdust (b) sugar (c) chalk powder (d) cooking oil
36. 36.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a battery cell (d) a mirror
37. 37.⚖️ 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) False (b) True
38. 38.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting butter (d) milk turning to curd
39. 39.⚖️ 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
40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny stars (d) tiny spheres

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