Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 356 · 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 “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.True or false: sand dissolves in water. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) sand (b) sugar (c) small pebbles (d) chalk powder
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a magnet (d) a shallow dish
7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a mirror (d) a piece of string
9. 9.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a magnet (d) salt
11. 11.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
12. 12.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
13. 13.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
14. 14.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
15. 15.True or false: sawdust does not dissolve in water. (a) True (b) False
16. 16.True or false: sugar dissolves in water. (a) False (b) True
17. 17.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
19. 19.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
20. 20.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.True or false: folding paper is a change that cannot be undone. (a) False (b) True
22. 22.⚖️ 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 salt (c) the amount of water (d) days to see crystals
23. 23.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) dissolving salt (d) milk turning to curd
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a battery cell (d) a piece of string
25. 25.True or false: dissolving salt is a change that can be undone. (a) False (b) True
26. 26.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) a piece of string
28. 28.True or false: freezing water is a change that can be undone. (a) True (b) False
29. 29.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
30. 30.True or false: melting butter is a change that cannot be undone. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) food colour (d) cooking oil
32. 32.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
33. 33.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
34. 34.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
35. 35.⚖️ 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 change it (c) we measure it
36. 36.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) a balloon (d) turmeric powder
38. 38.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
39. 39.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
40. 40.⚖️ 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

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