Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 887 · 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) cooking oil (b) chalk powder (c) food colour (d) small pebbles
2. 2.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
3. 3.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) a shallow dish (d) a spoon
6. 6.🌊 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
7. 7.🧈 Which of these is a change that can be undone? (a) melting ice (b) browning lemon ink (c) milk turning to curd (d) cooking an egg
8. 8.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to make it very salty (d) to cool the water
9. 9.⚖️ 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
10. 10.True or false: small pebbles dissolves in water. (a) False (b) True
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
12. 12.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
13. 13.True or false: freezing water is a change that can be undone. (a) False (b) True
14. 14.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) sugar (d) small pebbles
16. 16.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) warm water (d) yeast
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a balloon (d) a piece of string
19. 19.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
20. 20.🧺 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 mirror
21. 21.⚖️ 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 salt (b) the same dish (c) days to see crystals (d) sunny or shady place
22. 22.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
23. 23.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) food colour (d) baking soda
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 keep it the same (b) we change it (c) we measure it
25. 25.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) freezing water (d) baking a cake
26. 26.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) sugar (d) baking soda
27. 27.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
28. 28.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) sand (b) sawdust (c) chalk powder (d) sugar
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a shallow dish (d) a spoon
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a shallow dish (d) salt
33. 33.True or false: chalk powder does not dissolve in water. (a) False (b) True
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a magnet (d) salt
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) salt (d) a spoon
36. 36.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) glucose powder (d) cooking oil
37. 37.⚖️ 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
38. 38.True or false: baking soda dissolves in water. (a) False (b) True
39. 39.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
40. 40.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False

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