Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 938 · 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.⚖️ 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
2. 2.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
3. 3.⚖️ 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
4. 4.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) cooking oil (d) sand
7. 7.🧂 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
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
9. 9.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) chalk powder (d) sand
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) a shallow dish (d) salt
11. 11.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) dissolving salt (d) rusting iron
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a magnet (d) warm water
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) a magnet (d) salt
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
17. 17.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
18. 18.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
19. 19.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
20. 20.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sand (d) sugar
21. 21.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
22. 22.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
23. 23.⚖️ 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 water (c) days to see crystals (d) sunny or shady place
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) a battery cell
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) warm water (d) a spoon
28. 28.🧂 Which of these dissolves in water? (a) glucose powder (b) small pebbles (c) cooking oil (d) sawdust
29. 29.True or false: sawdust dissolves in water. (a) True (b) False
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a shallow dish (d) yeast
31. 31.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
34. 34.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
35. 35.True or false: warm water is needed for growing salt crystals. (a) True (b) False
36. 36.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting ice (c) folding paper (d) freezing water
37. 37.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
38. 38.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) melting butter (d) browning lemon ink
39. 39.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt

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