Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 283 · 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) a piece of string (c) a spoon (d) a balloon
2. 2.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it fizz (d) to make it very salty
3. 3.True or false: table salt does not dissolve in water. (a) False (b) True
4. 4.True or false: chalk powder does not dissolve in water. (a) False (b) True
5. 5.⚖️ 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) True (b) False
6. 6.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) cooking an egg (d) milk turning to curd
7. 7.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
8. 8.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
9. 9.⚖️ 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) the amount of water (d) sunny or shady place
10. 10.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) sea water evaporates (d) fish make it
11. 11.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of water
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) turmeric powder (d) salt
13. 13.⚖️ 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 kind of salt
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
16. 16.True or false: table salt dissolves in water. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) sawdust
18. 18.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
19. 19.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) salt (c) turmeric powder (d) a magnet
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) glucose powder (d) table salt
22. 22.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) small pebbles (d) chalk powder
23. 23.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) yeast (d) warm 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 kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
27. 27.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.True or false: small pebbles dissolves in water. (a) True (b) False
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
30. 30.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a shallow dish (d) a mirror
32. 32.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
33. 33.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) dissolving salt (d) folding paper
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) warm water (d) a spoon
35. 35.🧂 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) sugar (d) table salt
36. 36.True or false: cooking oil dissolves in water. (a) False (b) True
37. 37.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) browning lemon ink (d) melting butter
38. 38.🔍 Which is the odd one out? (a) sugar (b) sand (c) food colour (d) table salt
39. 39.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) glucose powder (d) sugar
40. 40.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed

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