Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 505 · 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 needed for growing salt crystals? (a) a battery cell (b) warm water (c) turmeric powder (d) yeast
2. 2.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) glucose powder (d) chalk powder
3. 3.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
7. 7.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a piece of string (d) a magnet
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
10. 10.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) rusting iron (d) dissolving salt
11. 11.True or false: glucose powder dissolves in water. (a) False (b) True
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a mirror (d) salt
13. 13.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) food colour
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) warm water (d) a shallow dish
15. 15.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
17. 17.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) water evaporates (d) the dish melts
18. 18.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sugar (d) glucose powder
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a battery cell (d) a spoon
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
22. 22.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.True or false: baking a cake is a change that can be undone. (a) True (b) False
24. 24.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) small pebbles (d) chalk powder
26. 26.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a magnet (d) a battery cell
28. 28.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) warm water (d) a spoon
30. 30.⚖️ 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
31. 31.🧂 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) food colour (d) sugar
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) warm water (d) a balloon
33. 33.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting butter (c) baking a cake (d) cooking an egg
34. 34.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
35. 35.True or false: dissolving salt is a change that can be undone. (a) False (b) True
36. 36.🧺 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 piece of string
37. 37.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sawdust (d) table salt
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a battery cell (c) turmeric powder (d) yeast
39. 39.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.⚖️ 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 change it (c) we measure it

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