Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 88 · 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.True or false: sawdust dissolves in water. (a) False (b) True
2. 2.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
6. 6.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
7. 7.⚖️ 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
8. 8.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
9. 9.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sand (d) sugar
10. 10.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sand (d) sugar
11. 11.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.True or false: sugar does not dissolve in water. (a) False (b) True
15. 15.True or false: small pebbles dissolves in water. (a) True (b) False
16. 16.🧂 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) sugar (d) glucose powder
17. 17.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) dissolving salt
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) warm water (d) salt
19. 19.🌊 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
20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
21. 21.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
24. 24.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) sand (d) glucose powder
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 measure it (b) we keep it the same (c) we change it
26. 26.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
27. 27.True or false: table salt does not dissolve in water. (a) False (b) True
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) chalk powder (d) food colour
29. 29.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
30. 30.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
31. 31.True or false: small pebbles does not dissolve in water. (a) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
34. 34.🧂 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) food colour (d) baking soda
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) turmeric powder (d) a shallow dish
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a piece of string (c) salt (d) a shallow dish
37. 37.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) browning lemon ink (c) dissolving salt (d) melting butter
38. 38.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
39. 39.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) melting butter (d) cooking an egg
40. 40.🔍 Which is the odd one out? (a) sand (b) food colour (c) cooking oil (d) small pebbles

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