Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 323 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a piece of string (d) warm water
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a spoon (c) salt (d) a piece of string
3. 3.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) chalk powder (d) table salt
4. 4.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) small pebbles (d) sugar
5. 5.True or false: chalk powder does not dissolve in water. (a) False (b) True
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) a spoon (d) a piece of string
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) table salt (b) sand (c) sugar (d) baking soda
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a shallow dish (d) yeast
10. 10.🧂 Which of these does not dissolve in water? (a) table salt (b) cooking oil (c) sugar (d) food colour
11. 11.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it very salty (d) to make it fizz
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) yeast (d) a spoon
13. 13.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) a spoon (d) a shallow dish
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a shallow dish (d) turmeric powder
18. 18.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
19. 19.True or false: sawdust does not dissolve in water. (a) False (b) True
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a spoon (d) salt
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) glucose powder (d) sand
23. 23.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
24. 24.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) folding paper (d) milk turning to curd
25. 25.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
27. 27.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🧺 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
29. 29.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
30. 30.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) small pebbles (d) sand
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
32. 32.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) table salt (d) sand
33. 33.True or false: glucose powder does not dissolve in water. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) cooking oil (d) baking soda
35. 35.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
36. 36.True or false: chalk powder dissolves in water. (a) False (b) True
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 water”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
40. 40.True or false: warm water is not needed for growing salt crystals. (a) False (b) True

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