Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 608 · 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 does not dissolve in water? (a) chalk powder (b) food colour (c) baking soda (d) sugar
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a piece of string (c) a spoon (d) warm water
3. 3.🔍 Which is the odd one out? (a) sawdust (b) glucose powder (c) cooking oil (d) small pebbles
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a mirror (c) a spoon (d) salt
5. 5.True or false: sand dissolves in water. (a) False (b) True
6. 6.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) food colour (d) small pebbles
7. 7.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
8. 8.⚖️ 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) sunny or shady place (b) the same dish (c) days to see crystals (d) the amount of salt
9. 9.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
10. 10.True or false: sawdust does not dissolve in water. (a) False (b) True
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) milk turning to curd (c) melting ice (d) freezing water
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a balloon (d) warm water
13. 13.True or false: folding paper is a change that can be undone. (a) False (b) True
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) a shallow dish (d) a spoon
15. 15.True or false: small pebbles dissolves in water. (a) True (b) False
16. 16.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sand (d) food colour
17. 17.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
19. 19.⚖️ 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
20. 20.True or false: table salt does not dissolve in water. (a) True (b) False
21. 21.⚖️ 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
22. 22.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) fish make it (d) sand is ground up
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) yeast (d) a piece of string
24. 24.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) chalk powder (d) sand
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) saturated (d) magnetic
27. 27.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
29. 29.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.⚖️ 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 salt
31. 31.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) food colour (d) small pebbles
32. 32.⚖️ 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
33. 33.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) folding paper (c) melting ice (d) dissolving salt
35. 35.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
36. 36.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) sawdust (d) small pebbles
37. 37.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) warm water (d) turmeric powder
39. 39.⚖️ 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
40. 40.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) melting ice (d) dissolving salt

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