Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 911 · 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.⚖️ 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
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
4. 4.True or false: cooking oil dissolves in water. (a) False (b) True
5. 5.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
6. 6.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
7. 7.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) salt (d) a balloon
10. 10.True or false: baking soda dissolves in water. (a) False (b) True
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) turmeric powder (d) a piece of string
12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
13. 13.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
14. 14.🧺 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 piece of string
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a mirror (d) salt
16. 16.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
17. 17.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
18. 18.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) milk turning to curd (d) dissolving salt
19. 19.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a piece of string (d) turmeric powder
21. 21.⚖️ 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) sunny or shady place (c) days to see crystals (d) the amount of salt
22. 22.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ 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) sunny or shady place (c) days to see crystals (d) the amount of salt
24. 24.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) food colour (c) sand (d) chalk powder
26. 26.True or false: cooking an egg is a change that can be undone. (a) True (b) False
27. 27.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
28. 28.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) warm water (d) a mirror
29. 29.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) it turns sweet (d) crystals grow faster
30. 30.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) cooking oil
31. 31.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) browning lemon ink (d) dissolving salt
33. 33.🔍 Which is the odd one out? (a) food colour (b) table salt (c) baking soda (d) small pebbles
34. 34.True or false: melting ice is a change that cannot be undone. (a) True (b) False
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of salt (c) sunny or shady place
36. 36.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
37. 37.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) turmeric powder (d) a piece of string
39. 39.🧂 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) table salt (d) sugar
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) a spoon (d) a shallow dish

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