Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 466 · 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.⚖️ 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 amount of salt (b) sunny or shady place (c) the kind of salt (d) the amount of water
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) salt (d) a piece of string
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
4. 4.True or false: sugar dissolves in water. (a) False (b) True
5. 5.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
7. 7.True or false: sand does not dissolve in water. (a) False (b) True
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) yeast (d) a magnet
9. 9.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) warm water (d) a balloon
11. 11.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
14. 14.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) salt (d) a magnet
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
19. 19.⚖️ 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) days to see crystals (c) the amount of salt (d) sunny or shady place
20. 20.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) baking a cake (d) melting ice
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) turmeric powder (d) a spoon
22. 22.⚖️ 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) True (b) False
23. 23.True or false: small pebbles does not dissolve in water. (a) False (b) True
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) warm water (d) a shallow dish
25. 25.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
26. 26.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) a battery cell (d) a balloon
28. 28.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) melting butter (d) freezing water
29. 29.True or false: sugar does not dissolve in water. (a) True (b) False
30. 30.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
31. 31.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) cooking an egg (d) folding paper
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
33. 33.True or false: chalk powder does not dissolve in water. (a) True (b) False
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a spoon (c) a piece of string (d) salt
37. 37.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a piece of string (d) a magnet
39. 39.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) chalk powder
40. 40.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True

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