Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 82 · 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.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) browning lemon ink (c) folding paper (d) dissolving salt
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
3. 3.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
4. 4.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
5. 5.⚖️ 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
6. 6.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) salt (c) warm water (d) a shallow dish
8. 8.🔍 Which is the odd one out? (a) baking soda (b) sand (c) cooking oil (d) sawdust
9. 9.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
10. 10.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
11. 11.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) browning lemon ink (d) milk turning to curd
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) sand (b) table salt (c) sugar (d) baking soda
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
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) days to see crystals (b) sunny or shady place (c) the amount of salt
19. 19.⚖️ 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 water
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧂 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) glucose powder (d) baking soda
22. 22.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it fizzes (d) it turns sweet
23. 23.⚖️ 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) days to see crystals (b) the same dish (c) the amount of salt (d) sunny or shady place
24. 24.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) browning lemon ink (d) folding paper
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) turmeric powder (d) warm water
26. 26.True or false: sugar does not dissolve in water. (a) False (b) True
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) warm water (d) salt
28. 28.True or false: cooking oil dissolves in water. (a) True (b) False
29. 29.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
30. 30.True or false: salt is needed for growing salt crystals. (a) True (b) False
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a shallow dish (d) a magnet
33. 33.⚖️ 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) days to see crystals (c) the same dish (d) the amount of water
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) warm water (d) a balloon
35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
36. 36.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.🧈 Which of these is a change that can be undone? (a) melting ice (b) milk turning to curd (c) cooking an egg (d) baking a cake
38. 38.True or false: rusting iron is a change that can be undone. (a) True (b) False
39. 39.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting butter (d) milk turning to curd
40. 40.⚖️ 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 change it (b) we keep it the same (c) we measure it

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