Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 54 · 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.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) a battery cell (d) a spoon
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a magnet
4. 4.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
5. 5.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
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 measure it (c) we change it
8. 8.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
9. 9.🔮 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
10. 10.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to make it very salty (d) to cool the water
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
14. 14.True or false: melting ice is a change that cannot be undone. (a) True (b) False
15. 15.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
16. 16.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) a shallow dish (d) salt
18. 18.🔍 Which is the odd one out? (a) table salt (b) sugar (c) glucose powder (d) cooking oil
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) turmeric powder (d) a spoon
20. 20.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
21. 21.⚖️ 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) True (b) False
22. 22.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
23. 23.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) freezing water (d) rusting iron
25. 25.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
26. 26.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
27. 27.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) dissolving salt (d) milk turning to curd
28. 28.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) dissolving salt (d) melting butter
29. 29.True or false: salt is not needed for growing salt crystals. (a) True (b) False
30. 30.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) melting ice (d) rusting iron
31. 31.True or false: small pebbles does not dissolve in water. (a) False (b) True
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
33. 33.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) warm water (d) a balloon
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a battery cell (d) a piece of string
35. 35.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) small pebbles (d) sand
36. 36.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
37. 37.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) the dish melts (d) salt grows roots
38. 38.True or false: melting ice is a change that can be undone. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) table salt (d) sugar
40. 40.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone

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