Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 775 · 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.True or false: glucose powder dissolves in water. (a) False (b) True
2. 2.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
3. 3.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) turmeric powder (d) a shallow dish
6. 6.🧂 Which of these dissolves in water? (a) sand (b) food colour (c) small pebbles (d) chalk powder
7. 7.True or false: cooking an egg is a change that can be undone. (a) True (b) False
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) salt (d) warm water
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a magnet (d) a shallow dish
11. 11.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) cooking an egg (d) milk turning to curd
12. 12.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
13. 13.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) baking soda (d) chalk powder
16. 16.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) freezing water (d) milk turning to curd
17. 17.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.⚖️ 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
20. 20.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place (d) the kind of salt
21. 21.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) table salt (d) cooking oil
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
23. 23.True or false: baking a cake is a change that can be undone. (a) True (b) False
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) yeast (c) salt (d) warm water
25. 25.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) sand (d) baking soda
29. 29.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting butter (c) folding paper (d) freezing water
30. 30.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) food colour (d) sand
31. 31.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) chalk powder (d) small pebbles
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) salt (d) a spoon
33. 33.⚖️ 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
34. 34.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
36. 36.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.True or false: cooking oil does not dissolve in water. (a) True (b) False
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
39. 39.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed

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