Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 414 · 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: rusting iron is a change that can be undone. (a) True (b) False
2. 2.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
3. 3.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) small pebbles (d) food colour
4. 4.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.⚖️ 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) the kind of salt (c) days to see crystals
6. 6.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) warm water (d) salt
8. 8.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) milk turning to curd (d) melting butter
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.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) a mirror (d) a battery cell
12. 12.⚖️ 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
13. 13.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
14. 14.True or false: warm water is needed for growing salt crystals. (a) False (b) True
15. 15.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) warm water (c) salt (d) a piece of string
18. 18.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) glucose powder (d) sugar
19. 19.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
21. 21.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) sand (b) food colour (c) glucose powder (d) sugar
23. 23.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
24. 24.⚖️ 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
25. 25.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
26. 26.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) a balloon (d) salt
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a shallow dish (d) a spoon
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a shallow dish (d) yeast
33. 33.⚖️ 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) the amount of salt (b) the amount of water (c) the same dish (d) sunny or shady place
34. 34.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
35. 35.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
37. 37.⚖️ 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
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
39. 39.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
40. 40.True or false: melting ice is a change that can be undone. (a) False (b) True

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