Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 273 · 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) sawdust (b) sand (c) glucose powder (d) small pebbles
2. 2.True or false: sawdust dissolves in water. (a) True (b) False
3. 3.True or false: dissolving salt is a change that can be undone. (a) True (b) False
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of water
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
7. 7.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
8. 8.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) sand (d) small pebbles
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) salt (d) a mirror
12. 12.🧈 Which of these is a change that can be undone? (a) folding paper (b) milk turning to curd (c) cooking an egg (d) browning lemon ink
13. 13.⚖️ 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
14. 14.True or false: table salt dissolves in water. (a) False (b) True
15. 15.⚖️ 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 amount of salt (c) sunny or shady place (d) the amount of water
16. 16.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
17. 17.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) melting butter (d) milk turning to curd
18. 18.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
19. 19.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) dissolving salt (d) browning lemon ink
20. 20.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
21. 21.⚖️ 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 change it (c) we measure it
22. 22.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) baking a cake (d) folding paper
23. 23.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🔍 Which is the odd one out? (a) sawdust (b) sand (c) glucose powder (d) chalk powder
25. 25.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
26. 26.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) rusting iron (d) milk turning to curd
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) yeast (d) a shallow dish
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) salt (d) warm water
31. 31.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
32. 32.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
33. 33.🔍 Which is the odd one out? (a) food colour (b) small pebbles (c) sugar (d) glucose powder
34. 34.True or false: folding paper is a change that cannot be undone. (a) False (b) True
35. 35.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
36. 36.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.True or false: baking soda does not dissolve in water. (a) True (b) False
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) yeast
39. 39.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
40. 40.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve

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