Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 134 · 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.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
2. 2.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) a shallow dish (d) a spoon
5. 5.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) sawdust
6. 6.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
7. 7.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
8. 8.⚖️ 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 salt
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) a magnet (d) turmeric powder
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
11. 11.⚖️ 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
12. 12.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) a piece of string (d) a spoon
14. 14.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sea water evaporates (d) sand is ground up
15. 15.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) glucose powder (d) sand
16. 16.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
17. 17.True or false: cooking oil dissolves in water. (a) True (b) False
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the same dish (c) the kind of salt (d) the amount of water
19. 19.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) warm water (c) a spoon (d) a shallow dish
21. 21.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sugar (d) sawdust
22. 22.True or false: sugar does not dissolve in water. (a) False (b) True
23. 23.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a shallow dish (c) a battery cell (d) turmeric powder
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
27. 27.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) rusting iron (c) dissolving salt (d) freezing water
28. 28.⚖️ 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) the kind of salt (b) the same dish (c) days to see crystals (d) sunny or shady place
29. 29.🧂 Which of these dissolves in water? (a) small pebbles (b) baking soda (c) cooking oil (d) chalk powder
30. 30.True or false: melting butter is a change that cannot be undone. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) sawdust (b) sand (c) small pebbles (d) table salt
32. 32.True or false: chalk powder dissolves in water. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) food colour (d) cooking oil
37. 37.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
39. 39.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) rusting iron (d) browning lemon ink
40. 40.True or false: warm water is not needed for growing salt crystals. (a) True (b) False

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