Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 202 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
2. 2.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) table salt (d) small pebbles
3. 3.⚖️ 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) True (b) False
4. 4.True or false: table salt dissolves in water. (a) False (b) True
5. 5.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a spoon (d) a piece of string
7. 7.⚖️ 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) False (b) True
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) frozen (d) saturated
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.⚖️ 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
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ 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 salt (b) the same dish (c) the kind of salt (d) sunny or shady place
14. 14.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
16. 16.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
18. 18.⚖️ 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 kind of salt (b) sunny or shady place (c) the amount of salt (d) days to see crystals
19. 19.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) fish make it (d) sand is ground up
20. 20.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) chalk powder
21. 21.True or false: sawdust dissolves in water. (a) True (b) False
22. 22.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
23. 23.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
24. 24.⚖️ 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
25. 25.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) baking a cake (d) milk turning to curd
26. 26.True or false: melting butter is a change that cannot be undone. (a) False (b) True
27. 27.⚖️ 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) False (b) True
28. 28.True or false: small pebbles dissolves in water. (a) True (b) False
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) liquid crystals (d) no crystals
30. 30.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a magnet (d) a piece of string
32. 32.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) a magnet (d) a balloon
34. 34.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) sand (d) cooking oil
35. 35.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) chalk powder (d) table salt
36. 36.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
37. 37.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) cooking an egg (c) dissolving salt (d) folding paper
38. 38.True or false: baking a cake is a change that can be undone. (a) True (b) False
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) turmeric powder (d) a piece of string
40. 40.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve

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