Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 778 · 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.True or false: sugar dissolves in water. (a) False (b) True
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
3. 3.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) freezing water (d) cooking an egg
4. 4.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
5. 5.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
6. 6.True or false: glucose powder does not dissolve in water. (a) True (b) False
7. 7.⚖️ 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 kind of salt (c) the amount of salt (d) the amount of water
8. 8.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) baking a cake (d) melting ice
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
12. 12.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
13. 13.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
14. 14.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
15. 15.⚖️ 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 change it (c) we keep it the same
16. 16.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
18. 18.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) chalk powder (d) sand
21. 21.⚖️ 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
22. 22.⚖️ 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 kind of salt (b) the amount of salt (c) days to see crystals (d) sunny or shady place
23. 23.True or false: cooking an egg is a change that can be undone. (a) True (b) False
24. 24.True or false: warm water is needed for growing salt crystals. (a) True (b) False
25. 25.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
26. 26.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) baking soda (d) table salt
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) yeast
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
29. 29.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) dissolving salt (d) browning lemon ink
30. 30.True or false: baking soda dissolves in water. (a) True (b) False
31. 31.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
32. 32.🧈 Which of these is a change that can be undone? (a) baking a cake (b) freezing water (c) milk turning to curd (d) cooking an egg
33. 33.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) sawdust (d) table salt
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a magnet (c) a shallow dish (d) warm water
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) salt (d) a shallow dish
38. 38.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
39. 39.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
40. 40.True or false: sand does not dissolve in water. (a) False (b) True

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