Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 92 · 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 dissolves in water? (a) sand (b) chalk powder (c) small pebbles (d) baking soda
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) warm water (d) a magnet
3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
4. 4.🧂 Which of these dissolves in water? (a) food colour (b) cooking oil (c) sand (d) sawdust
5. 5.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) cooking an egg (d) folding paper
6. 6.True or false: sugar dissolves in water. (a) True (b) False
7. 7.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
8. 8.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) rusting iron (d) freezing water
9. 9.⚖️ 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) True (b) False
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 keep it the same (b) we change it (c) we measure 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 amount of water”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.🧺 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
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a mirror (d) a shallow dish
14. 14.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a battery cell (d) a shallow dish
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) smaller crystals (d) liquid crystals
17. 17.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a mirror (c) a balloon (d) turmeric powder
19. 19.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) cooking an egg (c) melting butter (d) freezing water
20. 20.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) melting butter (d) melting ice
23. 23.🧂 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
24. 24.⚖️ 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
25. 25.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) chalk powder (d) sawdust
27. 27.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sand is ground up (d) sea water evaporates
28. 28.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
29. 29.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a piece of string (c) a spoon (d) warm water
31. 31.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) chalk powder (d) glucose powder
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a piece of string (d) a balloon
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a battery cell (d) a spoon
34. 34.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) milk turning to curd (d) melting butter
35. 35.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
36. 36.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
37. 37.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) baking a cake (d) milk turning to curd
38. 38.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
39. 39.🧂 Which of these dissolves in water? (a) sawdust (b) table salt (c) chalk powder (d) small pebbles
40. 40.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids