Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 625 · 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.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
2. 2.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sugar (d) table salt
3. 3.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) salt (d) a battery cell
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) warm water (d) salt
8. 8.🧺 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) yeast
9. 9.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
12. 12.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
13. 13.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) small pebbles (d) table salt
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.True or false: chalk powder does not dissolve in water. (a) False (b) True
16. 16.True or false: melting butter is a change that can be undone. (a) True (b) False
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a mirror (d) warm water
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 measure it (b) we change it (c) we keep it the same
19. 19.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) glucose powder (d) cooking oil
20. 20.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
21. 21.True or false: sawdust dissolves in water. (a) False (b) True
22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
23. 23.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
24. 24.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sugar (d) cooking oil
25. 25.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) dissolving salt (d) baking a cake
26. 26.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
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 same dish (b) days to see crystals (c) the amount of water (d) sunny or shady place
28. 28.True or false: melting ice is a change that cannot be undone. (a) True (b) False
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) turmeric powder (d) salt
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a mirror (d) warm water
31. 31.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
33. 33.⚖️ 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 kind of salt (b) the same dish (c) the amount of water (d) sunny or shady place
34. 34.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
35. 35.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
36. 36.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) table salt
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) yeast (d) warm water
38. 38.True or false: salt is not needed for growing salt crystals. (a) False (b) True
39. 39.True or false: food colour dissolves in water. (a) True (b) False
40. 40.True or false: yeast is needed for growing salt crystals. (a) True (b) False

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