Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 984 · 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.⚖️ 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 keep it the same (c) we measure it
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) it fizzes (d) crystals grow faster
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
6. 6.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
7. 7.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) table salt (d) chalk powder
8. 8.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) melting ice (d) milk turning to curd
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a piece of string (d) a magnet
10. 10.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.True or false: glucose powder dissolves in water. (a) False (b) True
12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
13. 13.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.True or false: rusting iron is a change that can be undone. (a) True (b) False
16. 16.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) yeast (d) a piece of string
18. 18.⚖️ 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
19. 19.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
20. 20.True or false: salt is needed for growing salt crystals. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) sugar (b) food colour (c) baking soda (d) small pebbles
22. 22.True or false: glucose powder does not dissolve in water. (a) False (b) True
23. 23.⚖️ 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 amount of water (c) the amount of salt (d) the same dish
24. 24.True or false: cooking an egg is a change that can be undone. (a) True (b) False
25. 25.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) freezing water (d) browning lemon ink
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
28. 28.True or false: sand dissolves in water. (a) False (b) True
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
30. 30.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) cooking an egg (d) dissolving salt
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a spoon (c) a piece of string (d) salt
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) salt (d) warm water
34. 34.True or false: baking soda dissolves in water. (a) False (b) True
35. 35.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
37. 37.🧈 Which of these is a change that can be undone? (a) melting butter (b) baking a cake (c) cooking an egg (d) browning lemon ink
38. 38.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
39. 39.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
40. 40.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) freezing water (c) melting ice (d) folding paper

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