Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 498 · 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.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
5. 5.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to cool the water (c) to make it very salty (d) to change its colour
6. 6.True or false: cooking oil dissolves in water. (a) True (b) False
7. 7.⚖️ 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) sunny or shady place (c) days to see crystals (d) the kind of salt
8. 8.⚖️ 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 change it (b) we measure it (c) we keep it the same
9. 9.True or false: sugar does not dissolve in water. (a) True (b) False
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a spoon (d) salt
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a piece of string (d) a mirror
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a magnet (d) a mirror
13. 13.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.🧂 Which of these dissolves in water? (a) sand (b) sugar (c) chalk powder (d) cooking oil
16. 16.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) sand (d) sawdust
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) a spoon (d) a piece of string
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) salt (d) warm water
21. 21.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) baking soda (d) sugar
22. 22.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) milk turning to curd (d) melting ice
23. 23.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) food colour (d) glucose powder
24. 24.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) frozen (d) magnetic
27. 27.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) chalk powder (d) sugar
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a shallow dish (d) a balloon
31. 31.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sugar (d) sawdust
32. 32.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) sawdust (d) food colour
33. 33.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
34. 34.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
37. 37.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
38. 38.🔍 Which is the odd one out? (a) sand (b) baking soda (c) cooking oil (d) sawdust
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed

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