Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 567 · 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 does not dissolve in water? (a) glucose powder (b) cooking oil (c) baking soda (d) food colour
2. 2.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) chalk powder (d) table salt
3. 3.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting ice (d) baking a cake
4. 4.⚖️ 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) days to see crystals (b) the same dish (c) the amount of water (d) sunny or shady place
5. 5.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) chalk powder (d) sugar
6. 6.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) cooking an egg (d) melting butter
7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) liquid crystals (d) no crystals
8. 8.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) cooking oil (d) sand
9. 9.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) melting butter
10. 10.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
11. 11.True or false: freezing water is a change that can be undone. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) sawdust (d) sand
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a balloon (d) salt
15. 15.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
16. 16.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) turmeric powder (d) a mirror
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a mirror
18. 18.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
19. 19.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
20. 20.True or false: yeast is needed for growing salt crystals. (a) True (b) False
21. 21.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sand (d) sugar
23. 23.⚖️ 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) sunny or shady place (c) the same dish
24. 24.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
25. 25.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) browning lemon ink (d) melting ice
26. 26.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
27. 27.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
28. 28.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
29. 29.⚖️ 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
30. 30.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a battery cell (c) a piece of string (d) salt
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a piece of string (d) a spoon
33. 33.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) food colour (d) sand
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) chalk powder (d) food colour
35. 35.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) cooking oil
36. 36.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a mirror (d) a balloon
37. 37.True or false: sand does not dissolve in water. (a) False (b) True
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a magnet (d) warm water
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 what we measure. (a) False (b) True
40. 40.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby

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