Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 130 · 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.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
2. 2.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) chalk powder (d) baking soda
3. 3.⚖️ 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) days to see crystals (c) the amount of water
4. 4.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
5. 5.🛟 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
6. 6.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
7. 7.⚖️ 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) days to see crystals (c) the same dish
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) yeast (d) a spoon
9. 9.🛟 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
10. 10.True or false: chalk powder does not dissolve in water. (a) True (b) False
11. 11.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) yeast (d) a piece of string
13. 13.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) table salt (d) small pebbles
14. 14.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) dissolving salt (d) baking a cake
15. 15.True or false: folding paper is a change that cannot be undone. (a) True (b) False
16. 16.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) chalk powder (d) glucose powder
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) salt (d) a piece of string
18. 18.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
19. 19.True or false: yeast is needed for growing salt crystals. (a) False (b) True
20. 20.⚖️ 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 change it (c) we measure it
21. 21.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
22. 22.⚖️ 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) sunny or shady place (b) the amount of salt (c) the amount of water (d) the same dish
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
24. 24.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
26. 26.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
27. 27.True or false: baking soda dissolves in water. (a) False (b) True
28. 28.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
29. 29.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) folding paper (d) browning lemon ink
30. 30.⚖️ 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
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) yeast (d) warm water
33. 33.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) cooking oil (d) food colour
34. 34.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) small pebbles (d) sawdust
35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
36. 36.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
37. 37.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) folding paper (c) browning lemon ink (d) baking a cake
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a spoon (d) a mirror

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