Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 132 · 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 “sunny or shady place”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ 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 same dish (b) the kind of salt (c) sunny or shady place (d) days to see crystals
3. 3.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
4. 4.⚖️ 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
5. 5.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) sawdust (d) food colour
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
7. 7.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) table salt (d) small pebbles
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
10. 10.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
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 salt”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) salt rains down (d) fish make it
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) salt (d) turmeric powder
16. 16.⚖️ 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 kind of salt (c) sunny or shady place (d) the amount of salt
17. 17.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
18. 18.⚖️ 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) True (b) False
19. 19.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) cooking oil (d) baking soda
20. 20.🔍 Which is the odd one out? (a) table salt (b) sand (c) sugar (d) food colour
21. 21.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) glucose powder
22. 22.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a magnet (d) warm water
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a balloon (d) salt
25. 25.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) sawdust (d) small pebbles
26. 26.🔍 Which is the odd one out? (a) table salt (b) food colour (c) glucose powder (d) cooking oil
27. 27.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) dissolving salt (d) cooking an egg
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) salt (d) a piece of string
32. 32.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
33. 33.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
35. 35.True or false: cooking oil does not dissolve in water. (a) False (b) True
36. 36.True or false: freezing water is a change that can be undone. (a) False (b) True
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) warm water (d) a balloon
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a magnet (d) a piece of string
40. 40.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water

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