Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 314 · 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) glucose powder (b) sand (c) table salt (d) baking soda
2. 2.🧂 Which of these dissolves in water? (a) sugar (b) small pebbles (c) sawdust (d) chalk powder
3. 3.⚖️ 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
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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) warm water (d) a spoon
6. 6.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) water evaporates (d) salt grows roots
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
8. 8.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the kind of salt
12. 12.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) sea water evaporates (d) salt rains down
13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
14. 14.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a magnet (d) a mirror
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a balloon (d) salt
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) salt (d) a spoon
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) turmeric powder (d) a shallow dish
18. 18.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
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) the amount of salt (b) sunny or shady place (c) the amount of water (d) the same dish
20. 20.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
21. 21.True or false: melting butter is a change that can be undone. (a) False (b) True
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a piece of string (d) yeast
23. 23.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) sugar (d) sand
24. 24.⚖️ 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 change it (c) we keep it the same
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) salt (d) a piece of string
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
27. 27.⚖️ 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) the same dish (c) days to see crystals (d) the amount of water
28. 28.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
29. 29.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
30. 30.⚖️ 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 change it (c) we keep it the same
31. 31.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) sawdust
32. 32.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
33. 33.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) table salt (c) sand (d) small pebbles
35. 35.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
36. 36.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sawdust (d) baking soda
37. 37.True or false: rusting iron is a change that can be undone. (a) False (b) True
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) a spoon (d) salt
39. 39.True or false: sugar dissolves in water. (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