Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 798 · 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 is the odd one out? (a) food colour (b) sugar (c) table salt (d) sand
2. 2.🧺 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
3. 3.True or false: chalk powder dissolves in water. (a) True (b) False
4. 4.True or false: chalk powder does not dissolve in water. (a) False (b) True
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) dissolving salt (c) rusting iron (d) milk turning to curd
7. 7.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sawdust (d) table salt
10. 10.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
11. 11.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
13. 13.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) glucose powder (d) sawdust
14. 14.⚖️ 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) sunny or shady place (b) the kind of salt (c) the amount of salt (d) the amount of water
15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a shallow dish (d) a balloon
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
19. 19.True or false: melting ice is a change that cannot be undone. (a) True (b) False
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a piece of string (d) a shallow dish
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a shallow dish (c) salt (d) warm water
22. 22.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
23. 23.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) warm water (c) salt (d) a piece of string
25. 25.🔮 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
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) a spoon (d) warm water
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a magnet (d) warm water
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a piece of string (c) warm water (d) a spoon
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) a spoon (d) a shallow dish
30. 30.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) milk turning to curd (d) baking a cake
31. 31.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
32. 32.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) small pebbles (d) sugar
33. 33.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) sugar (d) small pebbles
34. 34.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
35. 35.True or false: baking soda does not dissolve in water. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) sugar (b) table salt (c) food colour (d) small pebbles
37. 37.⚖️ 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 change it (c) we measure it
38. 38.True or false: salt is not needed for growing salt crystals. (a) True (b) False
39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
40. 40.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water

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