Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 281 · 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.True or false: small pebbles does not dissolve in water. (a) True (b) False
2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) small pebbles (d) table salt
3. 3.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) glucose powder (d) small pebbles
4. 4.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals
5. 5.True or false: melting butter is a change that cannot be undone. (a) False (b) True
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a spoon (d) a mirror
7. 7.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
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 keep it the same (b) we measure it (c) we change it
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
10. 10.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) small pebbles (d) cooking oil
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) a balloon (d) a battery cell
12. 12.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
13. 13.⚖️ 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 same dish (b) the amount of salt (c) days to see crystals (d) the kind of salt
14. 14.⚖️ 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) False (b) True
15. 15.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the same dish (c) sunny or shady place
17. 17.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sawdust (d) sugar
18. 18.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of salt (c) sunny or shady place
20. 20.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
21. 21.True or false: melting ice is a change that can be undone. (a) False (b) True
22. 22.⚖️ 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 change it (c) we measure it
23. 23.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
24. 24.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
25. 25.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) dissolving salt (c) melting ice (d) folding paper
26. 26.True or false: rusting iron is a change that can be undone. (a) True (b) False
27. 27.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) baking a cake (d) melting ice
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a shallow dish (c) warm water (d) a piece of string
29. 29.⚖️ 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) sunny or shady place (b) the kind of salt (c) the same dish (d) days to see crystals
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) warm water (d) a balloon
31. 31.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) salt (d) a spoon
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) turmeric powder (d) a shallow dish
34. 34.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) sawdust (d) chalk powder
36. 36.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
38. 38.True or false: freezing water is a change that cannot be undone. (a) True (b) False
39. 39.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) turmeric powder (d) salt

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