Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 313 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
2. 2.True or false: melting ice is a change that can be undone. (a) True (b) False
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a shallow dish (d) a spoon
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a spoon (d) turmeric powder
6. 6.True or false: table salt dissolves in water. (a) True (b) False
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
8. 8.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.⚖️ 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
10. 10.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
11. 11.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) food colour (d) chalk powder
12. 12.⚖️ 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
13. 13.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
14. 14.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
15. 15.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a balloon (c) salt (d) a piece of string
17. 17.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.True or false: food colour dissolves in water. (a) True (b) False
19. 19.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
20. 20.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) glucose powder (d) chalk powder
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a spoon (d) a mirror
23. 23.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) freezing water (d) browning lemon ink
24. 24.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
25. 25.True or false: sand dissolves in water. (a) False (b) True
26. 26.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) melting ice (d) baking a cake
27. 27.🧂 Which of these dissolves in water? (a) glucose powder (b) sawdust (c) chalk powder (d) sand
28. 28.⚖️ 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
29. 29.True or false: melting ice is a change that cannot be undone. (a) False (b) True
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a shallow dish (d) warm water
31. 31.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) dissolving salt (d) baking a cake
32. 32.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
33. 33.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧈 Can this change be undone: melting ice? (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? True or false: sunny or shady place is kept the same. (a) True (b) False
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) a mirror
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) a mirror (d) a magnet
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a piece of string (d) turmeric powder
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sawdust (d) glucose powder

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