Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 963 · 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.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) a shallow dish (d) a piece of string
2. 2.⚖️ 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
3. 3.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) cooking an egg (d) baking a cake
4. 4.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
6. 6.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
8. 8.⚖️ 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 water (b) the kind of salt (c) days to see crystals (d) sunny or shady place
9. 9.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) table salt (d) cooking oil
11. 11.True or false: sugar does not dissolve in water. (a) False (b) True
12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
13. 13.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) glucose powder (d) sand
14. 14.⚖️ 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 same dish (c) sunny or shady place (d) the kind of salt
15. 15.🧈 Which of these is a change that can be undone? (a) melting ice (b) rusting iron (c) milk turning to curd (d) browning lemon ink
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
18. 18.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
19. 19.True or false: baking soda does not dissolve in water. (a) True (b) False
20. 20.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) cooking an egg (d) freezing water
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a magnet (d) a spoon
22. 22.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
24. 24.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) yeast (d) salt
25. 25.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a spoon (d) a balloon
26. 26.🧺 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
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) warm water (d) a mirror
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a spoon (d) a magnet
29. 29.True or false: baking soda dissolves in water. (a) False (b) True
30. 30.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
31. 31.True or false: salt is not needed for growing salt crystals. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) table salt (d) sawdust
33. 33.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
36. 36.True or false: melting ice is a change that can be undone. (a) True (b) False
37. 37.🧈 Which of these is a change that can be undone? (a) rusting iron (b) freezing water (c) cooking an egg (d) browning lemon ink
38. 38.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) milk turning to curd (d) baking a cake
39. 39.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
40. 40.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone

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