Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 253 · 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 does not dissolve in water? (a) glucose powder (b) food colour (c) table salt (d) cooking oil
2. 2.🧂 Which of these dissolves in water? (a) sugar (b) chalk powder (c) cooking oil (d) sand
3. 3.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
4. 4.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) browning lemon ink (d) milk turning to curd
6. 6.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) sand (d) baking soda
7. 7.⚖️ 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
8. 8.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) days to see crystals (c) sunny or shady place (d) the same dish
10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) it fizzes (d) crystals grow faster
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 measure it (b) we change it (c) we keep it the same
12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) warm water (d) a balloon
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) in a busy doorway (d) next to the baby
14. 14.⚖️ 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
15. 15.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
16. 16.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) chalk powder (d) food colour
17. 17.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sugar (d) sand
18. 18.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
19. 19.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
20. 20.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
21. 21.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) rusting iron (d) melting ice
22. 22.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a mirror (c) a magnet (d) yeast
23. 23.True or false: glucose powder dissolves in water. (a) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) yeast (d) a piece of string
25. 25.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.⚖️ 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 amount of salt (c) the amount of water (d) sunny or shady place
27. 27.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
28. 28.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
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.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) warm water (d) a magnet
33. 33.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) food colour (d) sugar
35. 35.True or false: sand does not dissolve in water. (a) False (b) True
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a balloon (d) a spoon
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
38. 38.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a spoon (d) a balloon
40. 40.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False

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