Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 910 · 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 dissolves in water? (a) cooking oil (b) table salt (c) chalk powder (d) sawdust
2. 2.True or false: melting butter is a change that cannot be undone. (a) False (b) True
3. 3.⚖️ 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 water (b) sunny or shady place (c) days to see crystals (d) the kind of salt
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) warm water (d) yeast
5. 5.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
6. 6.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) frozen (d) magnetic
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
8. 8.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) table salt (d) sand
9. 9.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) chalk powder (d) baking soda
10. 10.True or false: food colour dissolves in water. (a) True (b) False
11. 11.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
13. 13.True or false: baking soda does not dissolve in water. (a) True (b) False
14. 14.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) melting butter
15. 15.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
16. 16.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
17. 17.True or false: small pebbles dissolves in water. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) glucose powder (d) sand
19. 19.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) turmeric powder
23. 23.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
24. 24.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) dissolving salt (d) rusting iron
25. 25.True or false: rusting iron is a change that can be undone. (a) False (b) True
26. 26.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
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) False (b) True
28. 28.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) cooking oil (d) food colour
30. 30.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) cooking oil (d) food colour
31. 31.True or false: melting ice is a change that can be undone. (a) False (b) True
32. 32.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
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 same dish (b) the kind of salt (c) sunny or shady place (d) days to see crystals
34. 34.True or false: cooking oil dissolves in water. (a) True (b) False
35. 35.⚖️ 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) the amount of salt (c) sunny or shady place
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) a shallow dish
37. 37.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.🔍 Which is the odd one out? (a) sand (b) food colour (c) baking soda (d) table salt

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