Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 123 · 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 is the odd one out? (a) sand (b) table salt (c) sugar (d) baking soda
2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) warm water (d) a piece of string
4. 4.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
6. 6.True or false: yeast is needed for growing salt crystals. (a) True (b) False
7. 7.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
8. 8.🧂 Which of these does not dissolve in water? (a) chalk powder (b) sugar (c) glucose powder (d) food colour
9. 9.True or false: melting butter is a change that cannot be undone. (a) True (b) False
10. 10.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
11. 11.True or false: sand does not dissolve in water. (a) True (b) False
12. 12.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
14. 14.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) yeast
16. 16.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) dissolving salt
17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.True or false: sugar dissolves in water. (a) True (b) False
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) salt (d) a spoon
20. 20.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sawdust (d) sugar
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) sand (d) cooking oil
24. 24.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) salt (d) a balloon
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a mirror (d) a piece of string
26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) milk turning to curd (c) freezing water (d) melting ice
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) turmeric powder (d) a battery cell
28. 28.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.⚖️ 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
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
31. 31.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
32. 32.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) rusting iron (d) dissolving salt
33. 33.True or false: baking soda does not dissolve in water. (a) True (b) False
34. 34.🧂 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) baking soda (d) food colour
35. 35.⚖️ 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) the same dish (c) sunny or shady place (d) the kind of salt
36. 36.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) sand (d) cooking oil
37. 37.True or false: cooking an egg is a change that can be undone. (a) True (b) False
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a spoon (d) a magnet
39. 39.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
40. 40.⚖️ 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 change it (c) we keep it the same

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