Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 405 · 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 is the odd one out? (a) chalk powder (b) small pebbles (c) glucose powder (d) sand
2. 2.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) warm water
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
5. 5.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) it turns sweet (d) few or no crystals
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a battery cell (d) salt
7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
8. 8.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
9. 9.🛟 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
10. 10.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
11. 11.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
12. 12.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
13. 13.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
14. 14.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
16. 16.⚖️ 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) True (b) False
17. 17.⚖️ 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) False (b) True
18. 18.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sugar (d) table salt
19. 19.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) cooking oil
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a battery cell (d) a spoon
23. 23.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) a battery cell (d) a magnet
24. 24.True or false: rusting iron is a change that can be undone. (a) True (b) False
25. 25.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) salt grows roots (d) the dish melts
26. 26.🔍 Which is the odd one out? (a) sand (b) table salt (c) small pebbles (d) chalk powder
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) warm water (d) turmeric powder
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
31. 31.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
32. 32.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) baking a cake (d) melting ice
33. 33.⚖️ 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
34. 34.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sawdust (d) baking soda
36. 36.True or false: table salt does not dissolve in water. (a) False (b) True
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a mirror (d) a piece of string
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) warm water (d) yeast
39. 39.⚖️ 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 kind of salt (c) the same dish (d) sunny or shady place
40. 40.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates

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