Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 551 · 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 what we measure? (a) days to see crystals (b) sunny or shady place (c) the same dish (d) the amount of water
2. 2.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) small pebbles (d) sand
3. 3.True or false: salt is needed for growing salt crystals. (a) True (b) False
4. 4.⚖️ 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 kind of salt (b) days to see crystals (c) sunny or shady place
5. 5.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
6. 6.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.⚖️ 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) sunny or shady place (c) the amount of salt (d) the same dish
10. 10.🧂 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) sugar (d) table salt
11. 11.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) rusting iron (d) browning lemon ink
12. 12.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.True or false: small pebbles dissolves in water. (a) True (b) False
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a mirror (d) a piece of string
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a piece of string (d) salt
17. 17.🧂 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) sand (d) baking soda
18. 18.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) warm water (d) turmeric powder
20. 20.⚖️ 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 measure it (c) we change it
21. 21.True or false: sawdust dissolves in water. (a) False (b) True
22. 22.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
23. 23.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
24. 24.True or false: chalk powder dissolves in water. (a) True (b) False
25. 25.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
27. 27.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
28. 28.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) cooking oil (d) small pebbles
29. 29.🧈 Which of these is a change that can be undone? (a) folding paper (b) browning lemon ink (c) rusting iron (d) cooking an egg
30. 30.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) cooking oil (d) chalk powder
33. 33.True or false: warm water is needed for growing salt crystals. (a) True (b) False
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) warm water (d) yeast
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a balloon (d) a spoon
37. 37.True or false: freezing water is a change that cannot be undone. (a) False (b) True
38. 38.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) cooking an egg (c) milk turning to curd (d) browning lemon ink
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) warm water
40. 40.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) baking soda (d) glucose powder

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