Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 484 · 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.🔍 Which is the odd one out? (a) sand (b) sawdust (c) small pebbles (d) food colour
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a balloon (d) a shallow dish
4. 4.True or false: baking soda dissolves in water. (a) True (b) False
5. 5.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) food colour (d) cooking oil
6. 6.⚖️ 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 water (c) the kind of salt (d) days to see crystals
7. 7.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) salt (d) a magnet
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
12. 12.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) milk turning to curd (d) dissolving salt
13. 13.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) cooking oil
15. 15.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
18. 18.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) turmeric powder (d) a shallow dish
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) a magnet (d) a balloon
20. 20.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) table salt (d) chalk powder
21. 21.⚖️ 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
22. 22.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
23. 23.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.⚖️ 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 amount of salt (b) sunny or shady place (c) the kind of salt (d) days to see crystals
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) a magnet
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) salt (d) a shallow dish
29. 29.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) cooking oil (d) sand
30. 30.True or false: salt is not needed for growing salt crystals. (a) False (b) True
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.True or false: cooking oil dissolves in water. (a) True (b) False
33. 33.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
34. 34.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
36. 36.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
38. 38.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
39. 39.⚖️ 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 same dish
40. 40.⚖️ 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

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