Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 404 · 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 table salt dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
3. 3.True or false: baking soda does not dissolve in water. (a) False (b) True
4. 4.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) dissolving salt (c) rusting iron (d) cooking an egg
5. 5.⚖️ 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
6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
7. 7.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
8. 8.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: salt is not needed for growing salt crystals. (a) False (b) True
10. 10.True or false: food colour dissolves in water. (a) True (b) False
11. 11.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
12. 12.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
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 water (b) days to see crystals (c) sunny or shady place
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a battery cell
16. 16.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
17. 17.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) chalk powder (d) food colour
20. 20.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) baking a cake (d) melting ice
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) turmeric powder (d) a piece of string
22. 22.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.True or false: rusting iron is a change that can be undone. (a) True (b) False
24. 24.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
25. 25.⚖️ 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 same dish (b) sunny or shady place (c) days to see crystals
26. 26.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
27. 27.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sugar (d) table salt
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) warm water (d) a magnet
30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a piece of string (c) a spoon (d) salt
33. 33.⚖️ 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
34. 34.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.True or false: melting ice is a change that cannot be undone. (a) True (b) False
36. 36.🧂 Which of these does not dissolve in water? (a) sand (b) baking soda (c) table salt (d) glucose powder
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) salt (d) yeast
38. 38.⚖️ 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
39. 39.True or false: melting butter is a change that cannot be undone. (a) False (b) True
40. 40.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) baking a cake (d) folding paper

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