Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 529 · 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.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
2. 2.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) rusting iron (d) melting ice
3. 3.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) melting ice (d) cooking an egg
5. 5.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
6. 6.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a magnet (d) a battery cell
8. 8.True or false: sawdust dissolves in water. (a) False (b) True
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a piece of string (c) salt (d) a shallow dish
10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
11. 11.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
13. 13.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) table salt
14. 14.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
16. 16.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) cooking oil (d) baking soda
17. 17.True or false: sawdust does not dissolve in water. (a) False (b) True
18. 18.True or false: food colour dissolves in water. (a) False (b) True
19. 19.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a piece of string (d) a spoon
21. 21.⚖️ 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) days to see crystals (c) the kind of salt
22. 22.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
24. 24.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) chalk powder (d) sand
25. 25.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
26. 26.True or false: sand dissolves in water. (a) False (b) True
27. 27.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.⚖️ 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) days to see crystals (c) sunny or shady place (d) the same dish
32. 32.⚖️ 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) True (b) False
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
34. 34.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
35. 35.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a battery cell (d) a shallow dish
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 change it (b) we keep it the same (c) we measure it
38. 38.True or false: freezing water is a change that cannot be undone. (a) False (b) True
39. 39.🔮 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
40. 40.True or false: glucose powder dissolves in water. (a) True (b) False

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