Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 861 · 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.True or false: folding paper is a change that cannot be undone. (a) True (b) False
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
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 the one thing we change. (a) False (b) True
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny stars (d) tiny triangles
6. 6.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
7. 7.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) salt (d) a spoon
9. 9.True or false: chalk powder does not dissolve in water. (a) False (b) True
10. 10.🧂 Which of these dissolves in water? (a) cooking oil (b) food colour (c) chalk powder (d) sand
11. 11.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) dissolving salt (c) baking a cake (d) browning lemon ink
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
13. 13.⚖️ 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 salt (b) sunny or shady place (c) days to see crystals
14. 14.True or false: sand dissolves in water. (a) True (b) False
15. 15.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
16. 16.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.⚖️ 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) days to see crystals (c) the same dish (d) the amount of salt
18. 18.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.⚖️ 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
21. 21.⚖️ 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) True (b) False
22. 22.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) sand (d) cooking oil
25. 25.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
26. 26.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.🧂 Which of these dissolves in water? (a) table salt (b) sawdust (c) sand (d) cooking oil
30. 30.🧈 Which of these is a change that can be undone? (a) melting ice (b) cooking an egg (c) rusting iron (d) baking a cake
31. 31.True or false: dissolving salt is a change that can be undone. (a) True (b) False
32. 32.True or false: sugar does not dissolve in water. (a) False (b) True
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a mirror (c) a magnet (d) a balloon
34. 34.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
35. 35.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) table salt
36. 36.True or false: freezing water is a change that can be undone. (a) True (b) False
37. 37.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
38. 38.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting butter (c) folding paper (d) freezing water
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
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 change it (b) we measure it (c) we keep it the same

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