Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 833 · 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.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
2. 2.⚖️ 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
3. 3.🔮 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
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting butter (c) cooking an egg (d) baking a cake
5. 5.True or false: chalk powder does not dissolve in water. (a) True (b) False
6. 6.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
7. 7.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a magnet (c) a shallow dish (d) warm water
9. 9.⚖️ 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 amount of water (c) sunny or shady place (d) the amount of salt
10. 10.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
11. 11.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) food colour (d) sand
13. 13.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) baking soda (d) sawdust
16. 16.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) yeast (d) a piece of string
18. 18.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
19. 19.🔮 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
20. 20.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) browning lemon ink (d) freezing water
21. 21.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
22. 22.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
23. 23.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
24. 24.True or false: melting ice is a change that can be undone. (a) False (b) True
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to cool the water (d) to make it very salty
27. 27.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) melting ice (d) cooking an egg
28. 28.True or false: warm water is needed for growing salt crystals. (a) True (b) False
29. 29.True or false: cooking an egg is a change that can be undone. (a) True (b) False
30. 30.⚖️ 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 change it (b) we keep it the same (c) we measure it
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a balloon (c) salt (d) a shallow dish
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a mirror (d) salt
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a spoon (d) a shallow dish
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a magnet (d) a spoon
35. 35.True or false: freezing water is a change that cannot be undone. (a) True (b) False
36. 36.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
37. 37.True or false: table salt 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) a balloon (b) a spoon (c) warm water (d) salt
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) yeast (c) a shallow dish (d) a spoon
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False

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