Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 81 · 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) chalk powder (b) sand (c) small pebbles (d) sugar
2. 2.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
3. 3.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) browning lemon ink (d) milk turning to curd
4. 4.True or false: cooking oil does not dissolve in water. (a) True (b) False
5. 5.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) warm water (d) turmeric powder
6. 6.True or false: sand dissolves in water. (a) True (b) False
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
10. 10.True or false: sugar does not dissolve in water. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) food colour (d) glucose powder
12. 12.True or false: freezing water is a change that can be undone. (a) True (b) False
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) salt (d) a balloon
14. 14.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) sawdust (d) cooking oil
15. 15.True or false: folding paper is a change that cannot be undone. (a) True (b) False
16. 16.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) baking soda (d) small pebbles
17. 17.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) warm water (d) a mirror
20. 20.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny stars (d) tiny triangles
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) a piece of string
22. 22.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
23. 23.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a mirror (d) a spoon
25. 25.True or false: cooking oil dissolves in water. (a) True (b) False
26. 26.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) browning lemon ink (c) melting butter (d) folding paper
27. 27.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) food colour (d) table salt
28. 28.True or false: baking a cake is a change that can be undone. (a) True (b) False
29. 29.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
30. 30.⚖️ 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
31. 31.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) table salt (d) chalk powder
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) warm water (d) salt
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
34. 34.🧈 Which of these is a change that can be undone? (a) melting butter (b) milk turning to curd (c) baking a cake (d) rusting iron
35. 35.True or false: small pebbles dissolves in water. (a) True (b) False
36. 36.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
37. 37.🔍 Which is the odd one out? (a) food colour (b) table salt (c) glucose powder (d) chalk powder
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
40. 40.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water

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