Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 332 · 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 “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) warm water (d) a shallow dish
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) salt (d) a shallow dish
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) a magnet
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
9. 9.⚖️ 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) the amount of water (c) days to see crystals (d) the same dish
10. 10.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) melting ice (d) cooking an egg
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) warm water (d) a mirror
12. 12.True or false: dissolving salt is a change that can be undone. (a) False (b) True
13. 13.True or false: salt is needed for growing salt crystals. (a) False (b) True
14. 14.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
15. 15.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
16. 16.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
17. 17.True or false: glucose powder does not dissolve in water. (a) True (b) False
18. 18.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a mirror (d) salt
19. 19.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
20. 20.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
21. 21.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) browning lemon ink
22. 22.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
24. 24.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) yeast (d) a battery cell
25. 25.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧂 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) cooking oil (d) chalk powder
27. 27.🛟 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
28. 28.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
29. 29.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
30. 30.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
32. 32.True or false: yeast is needed for growing salt crystals. (a) False (b) True
33. 33.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
34. 34.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
35. 35.True or false: chalk powder dissolves in water. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) food colour (d) baking soda
37. 37.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a shallow dish (d) a balloon
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.True or false: melting ice is a change that cannot be undone. (a) True (b) False

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