Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 976 · 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.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
5. 5.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
6. 6.⚖️ 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
7. 7.True or false: baking soda dissolves in water. (a) True (b) False
8. 8.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
9. 9.⚖️ 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
10. 10.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) salt (d) warm water
12. 12.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.True or false: baking a cake is a change that can be undone. (a) False (b) True
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) salt (d) yeast
15. 15.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a spoon (d) a shallow dish
17. 17.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) a balloon (d) salt
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a battery cell (d) a spoon
19. 19.True or false: yeast is needed for growing salt crystals. (a) False (b) True
20. 20.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) rusting iron (d) dissolving salt
21. 21.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
22. 22.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
23. 23.⚖️ 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) days to see crystals (c) sunny or shady place (d) the amount of water
24. 24.⚖️ 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
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) warm water (c) a shallow dish (d) a spoon
26. 26.True or false: cooking oil dissolves in water. (a) False (b) True
27. 27.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) table salt (d) small pebbles
28. 28.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) browning lemon ink
29. 29.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) cooking an egg (d) melting butter
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the kind of salt
31. 31.⚖️ 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 salt (c) days to see crystals (d) the kind of salt
32. 32.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
33. 33.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sand (d) food colour
34. 34.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
35. 35.⚖️ 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
36. 36.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) baking a cake (d) browning lemon ink
37. 37.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) no crystals (d) bigger crystals
38. 38.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) baking soda (d) cooking oil
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.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sugar (d) sand

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