Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 338 · 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 “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ 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
3. 3.True or false: warm water is needed for growing salt crystals. (a) False (b) True
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a piece of string (c) turmeric powder (d) yeast
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) salt crystals form (d) it turns to butter
6. 6.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) frozen (d) empty
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
9. 9.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
10. 10.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
11. 11.🔍 Which is the odd one out? (a) sugar (b) food colour (c) table salt (d) small pebbles
12. 12.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) freezing water (d) milk turning to curd
13. 13.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a magnet (d) yeast
15. 15.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
16. 16.True or false: yeast is needed for growing salt crystals. (a) True (b) False
17. 17.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) dissolving salt (c) baking a cake (d) cooking an egg
18. 18.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) a piece of string (d) warm water
20. 20.True or false: freezing water is a change that cannot be undone. (a) False (b) True
21. 21.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
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 turns sweet (d) it fizzes
23. 23.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) in a busy doorway (d) next to the baby
25. 25.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
27. 27.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) chalk powder (d) glucose powder
30. 30.⚖️ 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) sunny or shady place (c) days to see crystals (d) the kind of salt
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a magnet (c) salt (d) a piece of string
32. 32.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) chalk powder
34. 34.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
35. 35.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
38. 38.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) chalk powder (d) table salt
39. 39.True or false: table salt does not dissolve in water. (a) False (b) True
40. 40.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) rusting iron (c) melting ice (d) freezing water

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