Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 819 · 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.🧂 Which of these does not dissolve in water? (a) small pebbles (b) baking soda (c) food colour (d) sugar
2. 2.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
3. 3.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) glucose powder (d) cooking oil
4. 4.⚖️ 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 water (b) the kind of salt (c) days to see crystals (d) the same dish
5. 5.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) table salt (d) sawdust
6. 6.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) food colour (d) sawdust
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
10. 10.True or false: dissolving salt is a change that can be undone. (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 “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: baking soda dissolves in water. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) sand (b) sugar (c) chalk powder (d) cooking oil
14. 14.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.True or false: freezing water is a change that can be undone. (a) False (b) True
17. 17.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
18. 18.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) cooking an egg (d) baking a cake
19. 19.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
20. 20.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a battery cell (d) a piece of string
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) salt (d) a magnet
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a mirror (d) warm water
26. 26.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
27. 27.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
28. 28.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
29. 29.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
31. 31.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) small pebbles
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) glucose powder (d) food colour
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
35. 35.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) baking a cake (d) freezing water
36. 36.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
37. 37.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
39. 39.True or false: melting butter is a change that can be undone. (a) True (b) False
40. 40.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone

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