Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 851 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a shallow dish (d) a battery cell
2. 2.True or false: small pebbles dissolves in water. (a) False (b) True
3. 3.True or false: sawdust does not dissolve in water. (a) False (b) True
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) days to see crystals (b) the kind of salt (c) sunny or shady place
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 the one thing we change. (a) False (b) True
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) yeast (d) a magnet
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
8. 8.⚖️ 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 keep it the same (c) we change it
9. 9.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
10. 10.⚖️ 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) sunny or shady place (b) the kind of salt (c) days to see crystals (d) the amount of salt
11. 11.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) a mirror (d) a magnet
12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) food colour (d) sawdust
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
15. 15.🧂 Which of these does not dissolve in water? (a) food colour (b) chalk powder (c) glucose powder (d) table salt
16. 16.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🧂 Which of these does not dissolve in water? (a) cooking oil (b) glucose powder (c) food colour (d) sugar
18. 18.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
19. 19.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
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 salt”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.⚖️ 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
23. 23.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
24. 24.True or false: freezing water is a change that can be undone. (a) True (b) False
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) salt (d) warm water
26. 26.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) baking soda (d) sugar
27. 27.True or false: salt is needed for growing salt crystals. (a) False (b) True
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) food colour (d) small pebbles
29. 29.🧂 Which of these dissolves in water? (a) sand (b) food colour (c) small pebbles (d) chalk powder
30. 30.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
31. 31.True or false: yeast is needed for growing salt crystals. (a) False (b) True
32. 32.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧂 Which of these dissolves in water? (a) table salt (b) sawdust (c) small pebbles (d) cooking oil
34. 34.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) rusting iron (d) dissolving salt
35. 35.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
36. 36.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
37. 37.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
38. 38.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
39. 39.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a magnet (c) yeast (d) a balloon
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a magnet (d) warm water

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