Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 570 · 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 amount of salt is what we measure. (a) False (b) True
2. 2.True or false: dissolving salt is a change that can be undone. (a) True (b) False
3. 3.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) table salt (d) cooking oil
5. 5.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) table salt (d) sawdust
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) a magnet
7. 7.⚖️ 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) True (b) False
8. 8.🧂 Which of these dissolves in water? (a) sand (b) glucose powder (c) cooking oil (d) small pebbles
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a piece of string (c) a magnet (d) a mirror
11. 11.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
12. 12.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
13. 13.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
14. 14.True or false: baking soda does not dissolve in water. (a) True (b) False
15. 15.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) a mirror
17. 17.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) freezing water (c) melting butter (d) folding paper
18. 18.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) rusting iron (d) dissolving salt
19. 19.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
21. 21.⚖️ 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 water (b) sunny or shady place (c) days to see crystals (d) the same dish
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) yeast
24. 24.⚖️ 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
25. 25.⚖️ 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) False (b) True
26. 26.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) glucose powder (d) sand
27. 27.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.True or false: yeast is needed for growing salt crystals. (a) False (b) True
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) salt (d) a piece of string
30. 30.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) baking soda (d) sand
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) warm water (c) salt (d) a piece of string
33. 33.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
34. 34.🧈 Which of these is a change that can be undone? (a) melting ice (b) browning lemon ink (c) milk turning to curd (d) cooking an egg
35. 35.True or false: cooking oil dissolves in water. (a) True (b) False
36. 36.True or false: folding paper is a change that can be undone. (a) True (b) False
37. 37.🧈 Which of these is a change that can be undone? (a) folding paper (b) browning lemon ink (c) rusting iron (d) cooking an egg
38. 38.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
39. 39.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) food colour (d) cooking oil
40. 40.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed

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