Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 652 · 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) warm water (b) a magnet (c) yeast (d) a balloon
2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a battery cell (d) a shallow dish
4. 4.⚖️ 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) False (b) True
5. 5.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.True or false: freezing water is a change that can be undone. (a) True (b) False
8. 8.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
9. 9.⚖️ 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
10. 10.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) sawdust (b) sand (c) baking soda (d) small pebbles
13. 13.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sugar (d) table salt
14. 14.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a shallow dish (d) a balloon
16. 16.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) glucose powder (d) sand
17. 17.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) turmeric powder (d) a piece of string
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) salt (d) a mirror
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) warm water (d) yeast
21. 21.⚖️ 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 change it (c) we measure it
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
24. 24.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
25. 25.🧂 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
26. 26.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
28. 28.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
29. 29.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.True or false: table salt does not dissolve in water. (a) False (b) True
31. 31.🧈 Which of these is a change that can be undone? (a) folding paper (b) milk turning to curd (c) baking a cake (d) cooking an egg
32. 32.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
33. 33.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) warm water (d) a magnet
35. 35.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
36. 36.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) rusting iron (c) melting butter (d) melting ice
39. 39.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
40. 40.True or false: glucose powder does not dissolve in water. (a) True (b) False

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