Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 249 · 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) table salt (b) sand (c) sawdust (d) chalk powder
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 keep it the same (b) we measure it (c) we change it
3. 3.True or false: cooking oil dissolves in water. (a) True (b) False
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a magnet (d) salt
5. 5.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
6. 6.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) folding paper (d) melting ice
7. 7.⚖️ 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) days to see crystals (b) the same dish (c) the amount of water (d) sunny or shady place
8. 8.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) sugar (d) cooking oil
9. 9.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
10. 10.True or false: glucose powder does not dissolve in water. (a) False (b) True
11. 11.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) baking soda (d) table salt
13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) frozen (d) empty
14. 14.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
15. 15.⚖️ 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
16. 16.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) sand (d) food colour
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) salt (d) a battery cell
18. 18.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) glucose powder (d) chalk powder
20. 20.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
21. 21.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) sugar (b) food colour (c) table salt (d) sawdust
23. 23.⚖️ 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
24. 24.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
25. 25.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
26. 26.True or false: melting ice is a change that cannot be undone. (a) False (b) True
27. 27.🧂 Which of these dissolves in water? (a) table salt (b) small pebbles (c) chalk powder (d) cooking oil
28. 28.True or false: table salt dissolves in water. (a) False (b) True
29. 29.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to butter (d) it turns to oil
30. 30.True or false: baking soda dissolves in water. (a) False (b) True
31. 31.⚖️ 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 kind of salt
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a magnet (d) a shallow dish
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a mirror (d) a shallow dish
36. 36.🧂 Which of these dissolves in water? (a) small pebbles (b) baking soda (c) sand (d) sawdust
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a shallow dish (d) a magnet
40. 40.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water

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