Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 212 · 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? Which of these is the one thing we change? (a) sunny or shady place (b) days to see crystals (c) the kind of salt (d) the amount of water
2. 2.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
4. 4.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) rusting iron (c) melting butter (d) melting ice
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
6. 6.🧂 Which of these dissolves in water? (a) baking soda (b) sawdust (c) cooking oil (d) small pebbles
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
8. 8.⚖️ 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) True (b) False
9. 9.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
10. 10.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
11. 11.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
12. 12.True or false: melting butter is a change that can be undone. (a) False (b) True
13. 13.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a magnet (c) salt (d) a spoon
15. 15.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) a shallow dish (d) turmeric powder
16. 16.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) a balloon
18. 18.True or false: sand dissolves in water. (a) False (b) True
19. 19.True or false: warm water is needed for growing salt crystals. (a) True (b) False
20. 20.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
21. 21.True or false: baking soda does not dissolve in water. (a) True (b) False
22. 22.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) warm water (c) a magnet (d) yeast
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a piece of string (d) turmeric powder
24. 24.⚖️ 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) False (b) True
25. 25.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
26. 26.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) food colour (d) table salt
27. 27.True or false: cooking an egg is a change that can be undone. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
30. 30.⚖️ 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 water (b) days to see crystals (c) sunny or shady place
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) yeast
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a battery cell (d) salt
33. 33.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
34. 34.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.🛟 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
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) food colour (b) table salt (c) baking soda (d) cooking oil
38. 38.True or false: cooking oil dissolves in water. (a) True (b) False
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) salt (c) turmeric powder (d) a mirror
40. 40.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) small pebbles (d) sugar

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