Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 458 · 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.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
3. 3.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) dissolving salt (d) freezing water
4. 4.⚖️ 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) True (b) False
5. 5.⚖️ 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
6. 6.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) freezing water (d) baking a cake
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) a magnet
9. 9.True or false: food colour does not dissolve in water. (a) True (b) False
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) a shallow dish (d) a piece of string
11. 11.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.True or false: sand dissolves in water. (a) True (b) False
15. 15.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.True or false: small pebbles does not dissolve in water. (a) False (b) True
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a battery cell (d) a shallow dish
18. 18.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) chalk powder (d) sugar
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) sunny or shady place (c) the amount of salt (d) the amount of water
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a piece of string (c) salt (d) warm water
23. 23.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) table salt (d) sand
24. 24.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) sand (d) chalk powder
25. 25.🧂 Does small pebbles 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? Which of these is the one thing we change? (a) the kind of salt (b) sunny or shady place (c) the amount of water (d) the amount of salt
27. 27.True or false: table salt dissolves in water. (a) True (b) False
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
29. 29.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
30. 30.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
31. 31.True or false: baking a cake is a change that can be undone. (a) True (b) False
32. 32.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
33. 33.True or false: cooking oil dissolves in water. (a) True (b) False
34. 34.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) rusting iron
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a piece of string (d) a balloon
36. 36.⚖️ 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
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) sunny or shady place (c) days to see crystals
38. 38.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
39. 39.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for growing salt crystals? (a) salt (b) yeast (c) a magnet (d) a battery cell

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