Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 918 · 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? True or false: days to see crystals is what we measure. (a) False (b) True
2. 2.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
3. 3.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) cooking oil (d) sugar
4. 4.⚖️ 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 keep it the same (b) we change it (c) we measure it
5. 5.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
6. 6.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) melting ice (d) browning lemon ink
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
9. 9.True or false: table salt dissolves in water. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) sawdust (d) table salt
11. 11.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a magnet (d) a spoon
13. 13.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) melting butter (d) browning lemon ink
14. 14.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) chalk powder (d) table salt
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of salt
16. 16.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) warm water (d) a mirror
17. 17.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
19. 19.True or false: table salt does not dissolve in water. (a) True (b) False
20. 20.True or false: sawdust does not dissolve in water. (a) False (b) True
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 salt”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) turmeric powder
27. 27.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
28. 28.True or false: sand dissolves in water. (a) True (b) False
29. 29.True or false: freezing water is a change that can be undone. (a) False (b) True
30. 30.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
31. 31.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
32. 32.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
33. 33.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) freezing water (c) rusting iron (d) baking a cake
34. 34.⚖️ 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) the amount of salt (c) the amount of water (d) sunny or shady place
35. 35.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
37. 37.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.⚖️ 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) True (b) False
39. 39.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
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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