Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 368 · 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 is needed for growing salt crystals? (a) a spoon (b) a mirror (c) a balloon (d) a battery cell
2. 2.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
3. 3.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a piece of string (d) a spoon
5. 5.True or false: melting ice is a change that can be undone. (a) True (b) False
6. 6.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
7. 7.⚖️ 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 amount of water
8. 8.True or false: melting ice is a change that cannot be undone. (a) True (b) False
9. 9.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
13. 13.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
14. 14.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
15. 15.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
16. 16.True or false: baking soda does not dissolve in water. (a) False (b) True
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a shallow dish (d) a magnet
18. 18.⚖️ 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 same dish (c) the amount of salt (d) the amount of water
19. 19.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) salt eats water (d) the dish melts
20. 20.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) chalk powder (d) baking soda
22. 22.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🧈 Which of these is a change that can be undone? (a) baking a cake (b) dissolving salt (c) cooking an egg (d) browning lemon ink
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a piece of string (d) a shallow dish
25. 25.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) sugar (d) food colour
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a piece of string (d) salt
27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
28. 28.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
29. 29.🧈 Which of these is a change that can be undone? (a) melting ice (b) cooking an egg (c) milk turning to curd (d) browning lemon ink
30. 30.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
31. 31.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
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 kept the same. (a) True (b) False
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a battery cell (d) a magnet
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
35. 35.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) small pebbles (d) food colour
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) dissolving salt (c) melting butter (d) melting ice
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 kept the same. (a) False (b) True
39. 39.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) folding paper (d) milk turning to curd
40. 40.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve

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