Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 141 · 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? True or false: the same dish is kept the same. (a) False (b) True
2. 2.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
3. 3.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
4. 4.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sawdust (d) glucose powder
5. 5.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
6. 6.True or false: sugar dissolves 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 what we measure? (a) sunny or shady place (b) the kind of salt (c) the same dish (d) days to see crystals
8. 8.⚖️ 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
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
11. 11.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
12. 12.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) table salt (d) baking soda
13. 13.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) dissolving salt
14. 14.⚖️ 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 change it (c) we measure it
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) yeast (d) a shallow dish
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) a piece of string (d) a spoon
17. 17.⚖️ 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) sunny or shady place (c) the amount of water (d) the same dish
18. 18.⚖️ 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) days to see crystals (c) the amount of salt
19. 19.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) a battery cell (d) yeast
21. 21.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
23. 23.⚖️ 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 amount of water (c) days to see crystals
24. 24.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) salt (d) a piece of string
26. 26.True or false: freezing water is a change that can be undone. (a) True (b) False
27. 27.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
28. 28.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
29. 29.True or false: baking soda does not dissolve in water. (a) True (b) False
30. 30.⚖️ 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) True (b) False
31. 31.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) food colour (d) sand
32. 32.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
33. 33.🧈 Which of these is a change that can be undone? (a) melting ice (b) baking a cake (c) rusting iron (d) milk turning to curd
34. 34.⚖️ 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
35. 35.True or false: rusting iron is a change that can be undone. (a) True (b) False
36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny cubes (d) tiny triangles
37. 37.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) yeast (d) a shallow dish
40. 40.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) folding paper (d) freezing water

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