Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 326 · 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 of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) yeast (d) salt
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
3. 3.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
4. 4.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
5. 5.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
6. 6.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
7. 7.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
8. 8.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🧂 Which of these dissolves in water? (a) baking soda (b) sand (c) cooking oil (d) small pebbles
10. 10.⚖️ 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 keep it the same (c) we change it
11. 11.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) baking soda
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) salt (d) a magnet
13. 13.⚖️ 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
14. 14.🧂 Which of these does not dissolve in water? (a) chalk powder (b) glucose powder (c) sugar (d) table salt
15. 15.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
16. 16.⚖️ 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
17. 17.True or false: table salt dissolves in water. (a) False (b) True
18. 18.⚖️ 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) sunny or shady place (c) days to see crystals
19. 19.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) browning lemon ink (d) melting ice
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) a balloon
21. 21.True or false: baking soda dissolves in water. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) small pebbles (d) food colour
23. 23.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
24. 24.🧺 Do we need a shallow dish 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: days to see crystals is the one thing we change. (a) True (b) False
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
27. 27.True or false: sand does not dissolve in water. (a) True (b) False
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
29. 29.🧂 Which of these dissolves in water? (a) sugar (b) small pebbles (c) cooking oil (d) chalk powder
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
32. 32.True or false: food colour does not dissolve in water. (a) True (b) False
33. 33.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) milk turning to curd (c) browning lemon ink (d) baking a cake
34. 34.True or false: glucose powder dissolves in water. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) chalk powder (d) cooking oil
36. 36.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
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 kept the same. (a) True (b) False
38. 38.True or false: cooking oil dissolves in water. (a) False (b) True
39. 39.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
40. 40.⚖️ 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 measure it (c) we change it

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