Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 386 · 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: a piece of string is not needed for growing salt crystals. (a) False (b) True
2. 2.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
3. 3.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
4. 4.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
5. 5.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) glucose powder (d) baking soda
6. 6.🧂 Does baking soda 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) a battery cell (b) a shallow dish (c) a piece of string (d) warm water
8. 8.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
10. 10.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) cooking oil
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a battery cell (d) a spoon
12. 12.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
13. 13.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) baking a cake (d) freezing water
14. 14.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) chalk powder (d) table salt
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a spoon (d) warm water
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) turmeric powder (d) a spoon
17. 17.True or false: sand does not dissolve in water. (a) True (b) False
18. 18.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
21. 21.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
23. 23.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) freezing water (c) cooking an egg (d) baking a cake
24. 24.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) freezing water (c) folding paper (d) melting butter
25. 25.⚖️ 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 measure it (c) we keep it the same
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 amount of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
27. 27.True or false: salt is not needed for growing salt crystals. (a) False (b) True
28. 28.True or false: baking soda dissolves in water. (a) True (b) False
29. 29.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
30. 30.⚖️ 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
31. 31.True or false: table salt dissolves in water. (a) False (b) True
32. 32.⚖️ 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) the kind of salt (c) sunny or shady place (d) the amount of water
33. 33.True or false: sawdust dissolves in water. (a) True (b) False
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a balloon (d) a spoon
35. 35.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny triangles (d) tiny spheres
36. 36.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) milk turning to curd (d) melting butter
38. 38.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
40. 40.True or false: yeast is not needed for growing salt crystals. (a) False (b) True

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