Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 905 · 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? Which of these is the one thing we change? (a) days to see crystals (b) the kind of salt (c) the same dish (d) sunny or shady place
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) warm water (c) salt (d) a piece of string
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: food colour dissolves in water. (a) False (b) True
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) warm water (d) a spoon
6. 6.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) melting ice (c) folding paper (d) freezing water
7. 7.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
8. 8.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a spoon (d) yeast
10. 10.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) yeast (d) a magnet
13. 13.🧂 Which of these does not dissolve in water? (a) chalk powder (b) glucose powder (c) baking soda (d) table salt
14. 14.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
15. 15.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) liquid crystals (d) no crystals
16. 16.True or false: table salt does not dissolve in water. (a) True (b) False
17. 17.⚖️ 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) False (b) True
18. 18.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) folding paper (d) freezing water
19. 19.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a magnet (c) salt (d) warm water
21. 21.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sand (d) baking soda
22. 22.🧈 Can this change be undone: milk turning to curd? (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: days to see crystals is the one thing we change. (a) False (b) True
24. 24.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) melting butter (d) browning lemon ink
25. 25.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) cooking an egg (c) melting ice (d) freezing water
26. 26.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) baking a cake (c) melting butter (d) folding paper
27. 27.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
29. 29.True or false: glucose powder dissolves in water. (a) False (b) True
30. 30.True or false: baking soda does not dissolve in water. (a) True (b) False
31. 31.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
32. 32.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
33. 33.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
34. 34.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of water (c) days to see crystals (d) the amount of salt
36. 36.⚖️ 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 keep it the same (b) we change it (c) we measure it
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a mirror (d) a piece of string
38. 38.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
39. 39.⚖️ 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
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 measure it (b) we change it (c) we keep it the same

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