Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 128 · 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.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) warm water (d) a magnet
3. 3.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
4. 4.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) glucose powder (d) sawdust
5. 5.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
6. 6.⚖️ 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
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.True or false: freezing water is a change that cannot be undone. (a) False (b) True
9. 9.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
10. 10.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a battery cell (d) a spoon
12. 12.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a piece of string (c) salt (d) warm water
16. 16.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sawdust (c) sugar (d) table salt
17. 17.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) sand (d) small pebbles
18. 18.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
19. 19.True or false: table salt does not dissolve in water. (a) False (b) True
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.True or false: chalk powder dissolves in water. (a) False (b) True
22. 22.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a mirror (d) a piece of string
24. 24.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a spoon (c) yeast (d) a mirror
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) cooking oil (d) food colour
26. 26.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) yeast (d) a piece of string
29. 29.True or false: salt is not needed for growing salt crystals. (a) True (b) False
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a magnet (d) salt
31. 31.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
32. 32.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) melting ice (d) melting butter
33. 33.True or false: small pebbles does not dissolve in water. (a) True (b) False
34. 34.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) browning lemon ink (d) melting ice
35. 35.True or false: sand does not dissolve in water. (a) False (b) True
36. 36.⚖️ 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 amount of water
37. 37.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
38. 38.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
39. 39.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it fizzes (d) it turns sweet
40. 40.🔮 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

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