Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 709 · 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? Which of these is the one thing we change? (a) the amount of water (b) the same dish (c) sunny or shady place (d) the kind of salt
2. 2.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) rusting iron (d) melting butter
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.True or false: sand dissolves in water. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) sand (b) baking soda (c) glucose powder (d) food colour
6. 6.🧺 Do we need a balloon 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) warm water (b) a balloon (c) salt (d) a shallow dish
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) warm water (d) a magnet
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
10. 10.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) sunny or shady place (c) days to see crystals (d) the amount of water
12. 12.True or false: melting ice is a change that cannot be undone. (a) False (b) True
13. 13.True or false: glucose powder does not dissolve in water. (a) False (b) True
14. 14.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
15. 15.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) chalk powder (d) sugar
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 is the odd one out? (a) chalk powder (b) cooking oil (c) table salt (d) sawdust
18. 18.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
19. 19.⚖️ 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
20. 20.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
21. 21.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) melting ice (d) cooking an egg
23. 23.🧂 Which of these dissolves in water? (a) baking soda (b) cooking oil (c) small pebbles (d) sand
24. 24.True or false: cooking oil does not dissolve in water. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) cooking oil (d) small pebbles
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a mirror (d) a spoon
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a piece of string (d) a balloon
28. 28.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
29. 29.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
31. 31.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place
32. 32.True or false: melting butter is a change that cannot be undone. (a) False (b) True
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
34. 34.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
35. 35.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
36. 36.⚖️ 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) True (b) False
37. 37.True or false: small pebbles dissolves in water. (a) True (b) False
38. 38.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) melting ice (d) milk turning to curd
39. 39.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
40. 40.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed

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