Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 171 · 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) a spoon (b) a shallow dish (c) a balloon (d) salt
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
4. 4.True or false: glucose powder does not dissolve in water. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sugar (d) chalk powder
6. 6.🧂 Which of these does not dissolve in water? (a) food colour (b) chalk powder (c) sugar (d) baking soda
7. 7.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a magnet (d) a shallow dish
9. 9.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) rusting iron (d) dissolving salt
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) days to see crystals (c) the kind of salt (d) sunny or shady place
12. 12.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to cool the water (c) to change its colour (d) to make it fizz
13. 13.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.⚖️ 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
15. 15.⚖️ 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 keep it the same (b) we measure it (c) we change it
16. 16.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
18. 18.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sawdust (d) baking soda
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) warm water (d) a shallow dish
20. 20.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) food colour (d) chalk powder
21. 21.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) salt (d) warm water
23. 23.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a magnet (c) yeast (d) turmeric powder
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a magnet (d) a shallow dish
25. 25.🔍 Which is the odd one out? (a) food colour (b) table salt (c) glucose powder (d) cooking oil
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the kind of salt (c) days to see crystals
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.⚖️ 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
29. 29.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
30. 30.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a mirror (c) salt (d) a spoon
33. 33.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
34. 34.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a magnet (c) a battery cell (d) yeast
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
37. 37.True or false: folding paper is a change that can be undone. (a) True (b) False
38. 38.True or false: chalk powder dissolves in water. (a) True (b) False
39. 39.⚖️ 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 amount of salt (c) the same dish (d) sunny or shady place
40. 40.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False

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