Salt Crystal Experiment Worksheet

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

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