Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 489 · 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 not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) yeast
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) salt (d) a piece of string
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) salt (d) a spoon
4. 4.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) turmeric powder (c) yeast (d) a balloon
5. 5.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
6. 6.⚖️ 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) True (b) False
7. 7.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) sawdust
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
9. 9.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
10. 10.True or false: food colour does not dissolve in water. (a) True (b) False
11. 11.⚖️ 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
12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a balloon (d) salt
13. 13.🧂 Which of these dissolves in water? (a) glucose powder (b) sawdust (c) sand (d) cooking oil
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
15. 15.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
16. 16.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🛟 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
20. 20.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sugar (d) sand
21. 21.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) table salt (d) chalk powder
23. 23.⚖️ 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) False (b) True
24. 24.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt grows roots (d) salt eats water
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) salt rains down (d) fish make it
27. 27.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) chalk powder (d) glucose powder
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) warm water (d) a piece of string
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) cooking oil (d) sand
31. 31.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) yeast (d) warm water
33. 33.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
34. 34.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) sand
37. 37.⚖️ 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) False (b) True
38. 38.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) dissolving salt
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) salt (d) a battery cell
40. 40.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed

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