Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 686 · 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? True or false: sunny or shady place is kept the same. (a) True (b) False
2. 2.🛟 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
3. 3.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sugar (d) sawdust
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.True or false: freezing water is a change that cannot be undone. (a) True (b) False
6. 6.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a balloon
8. 8.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: table salt does not dissolve in water. (a) True (b) False
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) warm water (d) salt
11. 11.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
12. 12.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a shallow dish (d) a magnet
14. 14.⚖️ 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 kind of salt (b) sunny or shady place (c) the amount of salt (d) days to see crystals
15. 15.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting ice (d) baking a cake
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a mirror (c) a piece of string (d) a spoon
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a battery cell (d) a piece of string
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a shallow dish (c) warm water (d) a spoon
22. 22.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
23. 23.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) turmeric powder
25. 25.🧂 Which of these does not dissolve in water? (a) table salt (b) chalk powder (c) sugar (d) baking soda
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) it turns sweet (d) few or no crystals
27. 27.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
28. 28.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) glucose powder (d) small pebbles
30. 30.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) glucose powder (d) chalk powder
31. 31.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
32. 32.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) table salt (d) glucose powder
33. 33.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) cooking oil (d) sugar
34. 34.🔍 Which is the odd one out? (a) sand (b) sawdust (c) baking soda (d) cooking oil
35. 35.True or false: salt is needed for growing salt crystals. (a) False (b) True
36. 36.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
37. 37.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
38. 38.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) warm water (c) a balloon (d) a magnet
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids