Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 108 · 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) chalk powder (b) sand (c) glucose powder (d) cooking oil
2. 2.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a shallow dish (d) a mirror
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
6. 6.True or false: sand does not dissolve in water. (a) True (b) False
7. 7.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) baking soda
9. 9.True or false: salt is not needed for growing salt crystals. (a) True (b) False
10. 10.True or false: small pebbles does not dissolve in water. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) small pebbles (d) chalk powder
12. 12.🔮 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
13. 13.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt grows roots (d) salt eats water
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
15. 15.⚖️ 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) days to see crystals (c) sunny or shady place (d) the same dish
16. 16.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) small pebbles (d) food colour
18. 18.True or false: warm water is needed for growing salt crystals. (a) False (b) True
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
21. 21.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) smaller crystals (d) liquid crystals
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) a balloon (d) a magnet
24. 24.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) salt (d) a battery cell
26. 26.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.⚖️ 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
28. 28.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
29. 29.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
30. 30.True or false: food colour does not dissolve in water. (a) False (b) True
31. 31.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a piece of string (c) warm water (d) salt
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) small pebbles (d) sand
35. 35.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
36. 36.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
37. 37.⚖️ 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) True (b) False
38. 38.True or false: melting ice is a change that cannot be undone. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes

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