Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 859 · 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 kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.True or false: baking a cake is a change that can be undone. (a) False (b) True
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) warm water (d) yeast
4. 4.⚖️ 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
5. 5.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
6. 6.🧂 Which of these dissolves in water? (a) chalk powder (b) food colour (c) cooking oil (d) sand
7. 7.True or false: freezing water is a change that can be undone. (a) True (b) False
8. 8.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
9. 9.True or false: dissolving salt is a change that can be undone. (a) False (b) True
10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
11. 11.⚖️ 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) days to see crystals (c) the same dish (d) sunny or shady place
12. 12.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a mirror (c) a magnet (d) a balloon
13. 13.⚖️ 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) True (b) False
14. 14.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
15. 15.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) melting butter (d) browning lemon ink
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a battery cell (d) warm water
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) a magnet (d) a shallow dish
18. 18.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) a shallow dish (d) salt
21. 21.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
22. 22.True or false: glucose powder does not dissolve in water. (a) True (b) False
23. 23.True or false: small pebbles does not dissolve in water. (a) False (b) True
24. 24.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
25. 25.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) turmeric powder (d) a mirror
27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
28. 28.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) cooking oil
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a magnet (d) salt
30. 30.⚖️ 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
31. 31.True or false: cooking an egg is a change that can be undone. (a) True (b) False
32. 32.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) dissolving salt (c) folding paper (d) melting ice
33. 33.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) baking soda (d) sand
34. 34.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
35. 35.True or false: glucose powder dissolves in water. (a) True (b) False
36. 36.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
37. 37.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
38. 38.⚖️ 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
39. 39.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False

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