Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 295 · 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.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
2. 2.⚖️ 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 amount of water (b) the same dish (c) sunny or shady place (d) days to see crystals
3. 3.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
4. 4.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) warm water (d) salt
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a mirror (d) a battery cell
9. 9.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
10. 10.True or false: sand does not dissolve in water. (a) True (b) False
11. 11.⚖️ 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 keep it the same (c) we measure it
12. 12.🔍 Which is the odd one out? (a) sugar (b) sand (c) sawdust (d) chalk powder
13. 13.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) dissolving salt (c) folding paper (d) melting butter
14. 14.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
15. 15.True or false: food colour does not dissolve in water. (a) False (b) True
16. 16.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) warm water
18. 18.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) sugar (d) baking soda
19. 19.True or false: small pebbles does not dissolve in water. (a) False (b) True
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a piece of string (d) salt
21. 21.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
22. 22.True or false: glucose powder dissolves in water. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) sawdust (b) sand (c) table salt (d) small pebbles
24. 24.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) chalk powder
25. 25.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🧂 Which of these does not dissolve in water? (a) table salt (b) chalk powder (c) sugar (d) food colour
27. 27.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
28. 28.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
29. 29.True or false: sand dissolves in water. (a) True (b) False
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) yeast (d) a battery cell
32. 32.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) a balloon (d) a magnet
33. 33.🔮 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
34. 34.True or false: baking a cake is a change that can be undone. (a) False (b) True
35. 35.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
36. 36.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) it turns to oil (d) salt crystals form
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) turmeric powder (d) salt
38. 38.True or false: warm water is needed for growing salt crystals. (a) False (b) True
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.⚖️ 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 kind of salt (c) sunny or shady place (d) the amount of salt

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