Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 430 · 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 is the odd one out? (a) baking soda (b) food colour (c) table salt (d) sand
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) turmeric powder (d) warm water
4. 4.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
5. 5.True or false: cooking oil does not dissolve in water. (a) True (b) False
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) baking soda (d) small pebbles
8. 8.True or false: freezing water is a change that can be undone. (a) False (b) True
9. 9.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) turmeric powder (d) warm water
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the kind of salt (c) the same dish (d) sunny or shady place
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) yeast
13. 13.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) food colour (d) chalk powder
14. 14.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
15. 15.True or false: rusting iron is a change that can be undone. (a) False (b) True
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a balloon (d) a shallow dish
17. 17.True or false: small pebbles dissolves in water. (a) True (b) False
18. 18.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a battery cell (d) a shallow dish
19. 19.⚖️ 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 same dish (c) days to see crystals (d) the kind of salt
20. 20.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) small pebbles (d) food colour
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a magnet (d) salt
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) a battery cell
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a piece of string (d) a magnet
31. 31.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) browning lemon ink (d) melting butter
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a spoon (c) a shallow dish (d) salt
33. 33.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
34. 34.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) glucose powder (d) sawdust
35. 35.True or false: table salt dissolves in water. (a) True (b) False
36. 36.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
37. 37.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
38. 38.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a piece of string (c) warm water (d) salt
40. 40.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True

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