Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 969 · 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.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
3. 3.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
4. 4.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a battery cell (d) salt
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a balloon (d) a piece of string
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) salt (d) yeast
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
11. 11.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) baking soda (d) table salt
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) food colour (d) sand
13. 13.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a magnet (d) warm water
15. 15.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
16. 16.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
17. 17.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
18. 18.True or false: melting ice is a change that can be undone. (a) False (b) True
19. 19.⚖️ 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 amount of salt (b) sunny or shady place (c) days to see crystals (d) the same dish
20. 20.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
21. 21.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) sand
22. 22.True or false: sugar does not dissolve in water. (a) True (b) False
23. 23.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) dissolving salt (c) baking a cake (d) cooking an egg
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) the same dish (c) days to see crystals (d) the amount of salt
28. 28.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a shallow dish (d) a piece of string
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) smaller crystals (d) bigger crystals
31. 31.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
32. 32.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to cool the water (c) to change its colour (d) to make it very salty
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
36. 36.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) baking soda (d) food colour
38. 38.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) cooking oil (d) baking soda

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