Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 577 · 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) sugar (b) sawdust (c) chalk powder (d) sand
2. 2.True or false: chalk powder does not dissolve in water. (a) False (b) True
3. 3.⚖️ 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) the same dish (c) days to see crystals
4. 4.True or false: salt is not needed for growing salt crystals. (a) True (b) False
5. 5.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ 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 change it (c) we measure it
8. 8.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) a spoon (d) salt
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a piece of string (c) turmeric powder (d) a battery cell
12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sand (d) food colour
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
14. 14.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) table salt (d) cooking oil
15. 15.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) baking a cake (d) melting ice
16. 16.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) sand (d) small pebbles
17. 17.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) glucose powder (d) small pebbles
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a shallow dish (d) yeast
19. 19.True or false: freezing water is a change that can be undone. (a) False (b) True
20. 20.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) sand (b) baking soda (c) chalk powder (d) cooking oil
23. 23.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🔍 Which is the odd one out? (a) table salt (b) sugar (c) glucose powder (d) chalk powder
25. 25.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
27. 27.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
28. 28.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
29. 29.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
30. 30.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) browning lemon ink (d) dissolving salt
31. 31.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
33. 33.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
34. 34.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
35. 35.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: folding paper is a change that cannot be undone. (a) False (b) True
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) a mirror (d) a shallow dish
38. 38.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) crystals grow faster (d) it fizzes
39. 39.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a battery cell (d) a shallow dish

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