Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 308 · 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 the one thing we change? (a) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the same dish
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
4. 4.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
5. 5.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) baking soda (d) food colour
6. 6.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
7. 7.True or false: salt is not needed for growing salt crystals. (a) True (b) False
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a battery cell (d) a piece of string
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a piece of string (d) a balloon
10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a spoon (d) yeast
12. 12.⚖️ 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 water
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
15. 15.True or false: warm water is needed for growing salt crystals. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) table salt (b) food colour (c) cooking oil (d) baking soda
17. 17.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
18. 18.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a mirror (c) a battery cell (d) a balloon
19. 19.True or false: table salt does not dissolve in water. (a) False (b) True
20. 20.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
21. 21.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) milk turning to curd (c) dissolving salt (d) melting butter
22. 22.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sand (d) table salt
23. 23.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
25. 25.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) table salt
28. 28.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) freezing water (c) melting butter (d) melting ice
29. 29.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny stars (d) tiny triangles
30. 30.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) folding paper (d) milk turning to curd
31. 31.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) dissolving salt (d) cooking an egg
32. 32.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sugar (d) sawdust
33. 33.True or false: rusting iron is a change that can be undone. (a) False (b) True
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) turmeric powder
35. 35.🧈 Which of these is a change that can be undone? (a) freezing water (b) rusting iron (c) milk turning to curd (d) baking a cake
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) warm water (d) a piece of string
37. 37.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) yeast (d) salt
38. 38.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
39. 39.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
40. 40.⚖️ 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

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