Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 737 · 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) baking soda (c) sugar (d) sand
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a piece of string (d) a battery cell
4. 4.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
6. 6.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the kind of salt (c) the same dish (d) days to see crystals
9. 9.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sawdust (d) table salt
10. 10.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a magnet (c) a mirror (d) a balloon
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) a spoon (d) warm water
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a magnet (d) warm water
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) yeast (d) a spoon
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) a balloon (d) a magnet
16. 16.⚖️ 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
17. 17.⚖️ 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) the same dish (b) the amount of salt (c) sunny or shady place (d) the amount of water
18. 18.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
19. 19.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.⚖️ 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) True (b) False
21. 21.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) table salt (d) food colour
22. 22.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) salt (d) a shallow dish
25. 25.⚖️ 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 same dish (c) sunny or shady place
26. 26.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
31. 31.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
32. 32.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
33. 33.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to make it very salty (d) to cool the water
34. 34.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) salt (d) a magnet
36. 36.True or false: freezing water is a change that cannot be undone. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) sand (d) glucose powder
38. 38.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
39. 39.True or false: cooking an egg is a change that can be undone. (a) False (b) True
40. 40.⚖️ 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 salt

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